Merge tag 'upstream/0.9.7'

Upstream version 0.9.7

151 files changed, 2132 insertions, 1605 deletions

diff --git a/lib/unistr/u-cmp2.h b/lib/unistr/u-cmp2.h
index 6ee062d..18dda28 100644
--- a/lib/unistr/u-cmp2.h
+++ b/lib/unistr/u-cmp2.h
@@ -1,12 +1,21 @@
 /* Compare pieces of UTF-8/UTF-16/UTF-32 strings.
-   Copyright (C) 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u-cpy-alloc.h b/lib/unistr/u-cpy-alloc.h
index 5e3ad56..00f8e10 100644
--- a/lib/unistr/u-cpy-alloc.h
+++ b/lib/unistr/u-cpy-alloc.h
@@ -1,13 +1,22 @@
 /* Copy piece of UTF-8/UTF-16/UTF-32 string.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2015 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2016 Free Software Foundation,
    Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u-cpy.h b/lib/unistr/u-cpy.h
index 2f9f997..1ae9ebf 100644
--- a/lib/unistr/u-cpy.h
+++ b/lib/unistr/u-cpy.h
@@ -1,12 +1,21 @@
 /* Copy piece of UTF-8/UTF-16/UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u-endswith.h b/lib/unistr/u-endswith.h
index cd366c1..5823343 100644
--- a/lib/unistr/u-endswith.h
+++ b/lib/unistr/u-endswith.h
@@ -1,12 +1,21 @@
 /* Substring test for UTF-8/UTF-16/UTF-32 strings.
-   Copyright (C) 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u-move.h b/lib/unistr/u-move.h
index 13332a0..963c230 100644
--- a/lib/unistr/u-move.h
+++ b/lib/unistr/u-move.h
@@ -1,12 +1,21 @@
 /* Copy piece of UTF-8/UTF-16/UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u-set.h b/lib/unistr/u-set.h
index 8cb2737..fc6cd41 100644
--- a/lib/unistr/u-set.h
+++ b/lib/unistr/u-set.h
@@ -1,12 +1,21 @@
 /* Fill UTF-8/UTF-16/UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u-startswith.h b/lib/unistr/u-startswith.h
index 393dad5..0375d7e 100644
--- a/lib/unistr/u-startswith.h
+++ b/lib/unistr/u-startswith.h
@@ -1,12 +1,21 @@
 /* Substring test for UTF-8/UTF-16/UTF-32 strings.
-   Copyright (C) 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u-stpcpy.h b/lib/unistr/u-stpcpy.h
index bbb3623..c3073b1 100644
--- a/lib/unistr/u-stpcpy.h
+++ b/lib/unistr/u-stpcpy.h
@@ -1,12 +1,21 @@
 /* Copy UTF-8/UTF-16/UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u-stpncpy.h b/lib/unistr/u-stpncpy.h
index 545e102..8d9e945 100644
--- a/lib/unistr/u-stpncpy.h
+++ b/lib/unistr/u-stpncpy.h
@@ -1,12 +1,21 @@
 /* Copy UTF-8/UTF-16/UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u-strcat.h b/lib/unistr/u-strcat.h
index 4119d39..73dc231 100644
--- a/lib/unistr/u-strcat.h
+++ b/lib/unistr/u-strcat.h
@@ -1,12 +1,21 @@
 /* Concatenate UTF-8/UTF-16/UTF-32 strings.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u-strcoll.h b/lib/unistr/u-strcoll.h
index 014e11b..3bfbe56 100644
--- a/lib/unistr/u-strcoll.h
+++ b/lib/unistr/u-strcoll.h
@@ -1,13 +1,22 @@
 /* Compare UTF-8/UTF-16/UTF-32 strings using the collation rules of the current
    locale.
-   Copyright (C) 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u-strcpy.h b/lib/unistr/u-strcpy.h
index aca6847..b944336 100644
--- a/lib/unistr/u-strcpy.h
+++ b/lib/unistr/u-strcpy.h
@@ -1,12 +1,21 @@
 /* Copy UTF-8/UTF-16/UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u-strcspn.h b/lib/unistr/u-strcspn.h
index bb287d8..2fc7bad 100644
--- a/lib/unistr/u-strcspn.h
+++ b/lib/unistr/u-strcspn.h
@@ -1,12 +1,21 @@
 /* Search for some characters in UTF-8/UTF-16/UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u-strdup.h b/lib/unistr/u-strdup.h
index 80cb454..a4425f4 100644
--- a/lib/unistr/u-strdup.h
+++ b/lib/unistr/u-strdup.h
@@ -1,13 +1,22 @@
 /* Copy UTF-8/UTF-16/UTF-32 string.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2015 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2016 Free Software Foundation,
    Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u-strlen.h b/lib/unistr/u-strlen.h
index 11d9831..9710590 100644
--- a/lib/unistr/u-strlen.h
+++ b/lib/unistr/u-strlen.h
@@ -1,12 +1,21 @@
 /* Determine length of UTF-8/UTF-16/UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u-strncat.h b/lib/unistr/u-strncat.h
index f202d32..ae0fd93 100644
--- a/lib/unistr/u-strncat.h
+++ b/lib/unistr/u-strncat.h
@@ -1,12 +1,21 @@
 /* Concatenate UTF-8/UTF-16/UTF-32 strings.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u-strncpy.h b/lib/unistr/u-strncpy.h
index 8354d0c..e731aa2 100644
--- a/lib/unistr/u-strncpy.h
+++ b/lib/unistr/u-strncpy.h
@@ -1,12 +1,21 @@
 /* Copy UTF-8/UTF-16/UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u-strnlen.h b/lib/unistr/u-strnlen.h
index bcf1e03..4f9c8b6 100644
--- a/lib/unistr/u-strnlen.h
+++ b/lib/unistr/u-strnlen.h
@@ -1,12 +1,21 @@
 /* Determine bounded length of UTF-8/UTF-16/UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u-strpbrk.h b/lib/unistr/u-strpbrk.h
index 60653ab..4df5b57 100644
--- a/lib/unistr/u-strpbrk.h
+++ b/lib/unistr/u-strpbrk.h
@@ -1,12 +1,21 @@
 /* Search for some characters in UTF-8/UTF-16/UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u-strspn.h b/lib/unistr/u-strspn.h
index d15c46e..9dccbdf 100644
--- a/lib/unistr/u-strspn.h
+++ b/lib/unistr/u-strspn.h
@@ -1,12 +1,21 @@
 /* Search for some characters in UTF-8/UTF-16/UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u-strstr.h b/lib/unistr/u-strstr.h
index 459215e..b4e7e3c 100644
--- a/lib/unistr/u-strstr.h
+++ b/lib/unistr/u-strstr.h
@@ -1,12 +1,21 @@
-/* Substring test for UTF-8/UTF-16/UTF-32 strings.
-   Copyright (C) 1999, 2002, 2006, 2010-2015 Free Software Foundation, Inc.
+/* Substring test for UTF-8/UTF-16/UTF-32 strings.  -*- coding: utf-8 -*-
+   Copyright (C) 1999, 2002, 2006, 2010-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002, 2005.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u-strtok.h b/lib/unistr/u-strtok.h
index edafa1b..899ac76 100644
--- a/lib/unistr/u-strtok.h
+++ b/lib/unistr/u-strtok.h
@@ -1,12 +1,21 @@
 /* Tokenize UTF-8/UTF-16/UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u16-check.c b/lib/unistr/u16-check.c
index ef6e334..8a13c01 100644
--- a/lib/unistr/u16-check.c
+++ b/lib/unistr/u16-check.c
@@ -1,12 +1,21 @@
 /* Check UTF-16 string.
-   Copyright (C) 2002, 2006-2007, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
@@ -27,7 +36,7 @@ u16_check (const uint16_t *s, size_t n)
 
   while (s < s_end)
     {
-      /* Keep in sync with unistr.h and utf16-ucs4.c.  */
+      /* Keep in sync with unistr.h and u16-mbtouc-aux.c.  */
       uint16_t c = *s;
 
       if (c < 0xd800 || c >= 0xe000)
diff --git a/lib/unistr/u16-chr.c b/lib/unistr/u16-chr.c
index cbf8dd2..d000db0 100644
--- a/lib/unistr/u16-chr.c
+++ b/lib/unistr/u16-chr.c
@@ -1,13 +1,22 @@
 /* Search character in piece of UTF-16 string.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2015 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2016 Free Software Foundation,
    Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u16-cmp.c b/lib/unistr/u16-cmp.c
index 01059f8..b4a670a 100644
--- a/lib/unistr/u16-cmp.c
+++ b/lib/unistr/u16-cmp.c
@@ -1,12 +1,21 @@
 /* Compare pieces of UTF-16 strings.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u16-cmp2.c b/lib/unistr/u16-cmp2.c
index 687356f..3a4152b 100644
--- a/lib/unistr/u16-cmp2.c
+++ b/lib/unistr/u16-cmp2.c
@@ -1,12 +1,21 @@
 /* Compare pieces of UTF-16 strings.
-   Copyright (C) 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u16-cpy-alloc.c b/lib/unistr/u16-cpy-alloc.c
index 567855d..53295ce 100644
--- a/lib/unistr/u16-cpy-alloc.c
+++ b/lib/unistr/u16-cpy-alloc.c
@@ -1,12 +1,21 @@
 /* Copy piece of UTF-16 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u16-cpy.c b/lib/unistr/u16-cpy.c
index cdcf6af..05321d9 100644
--- a/lib/unistr/u16-cpy.c
+++ b/lib/unistr/u16-cpy.c
@@ -1,12 +1,21 @@
 /* Copy piece of UTF-16 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u16-endswith.c b/lib/unistr/u16-endswith.c
index ee7c392..8b1182c 100644
--- a/lib/unistr/u16-endswith.c
+++ b/lib/unistr/u16-endswith.c
@@ -1,12 +1,21 @@
 /* Substring test for UTF-16 strings.
-   Copyright (C) 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u16-mblen.c b/lib/unistr/u16-mblen.c
index 6fab7e8..5a1cfb2 100644
--- a/lib/unistr/u16-mblen.c
+++ b/lib/unistr/u16-mblen.c
@@ -1,13 +1,22 @@
 /* Look at first character in UTF-16 string.
-   Copyright (C) 1999-2000, 2002, 2006-2007, 2009-2015 Free Software
+   Copyright (C) 1999-2000, 2002, 2006-2007, 2009-2016 Free Software
    Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
@@ -26,24 +35,17 @@ u16_mblen (const uint16_t *s, size_t n)
 {
   if (n > 0)
     {
-      /* Keep in sync with unistr.h and utf16-ucs4.c.  */
+      /* Keep in sync with unistr.h and u16-mbtouc-aux.c.  */
       uint16_t c = *s;
 
       if (c < 0xd800 || c >= 0xe000)
         return (c != 0 ? 1 : 0);
-#if CONFIG_UNICODE_SAFETY
       if (c < 0xdc00)
         {
           if (n >= 2
               && s[1] >= 0xdc00 && s[1] < 0xe000)
             return 2;
         }
-#else
-        {
-          if (n >= 2)
-            return 2;
-        }
-#endif
     }
   /* invalid or incomplete multibyte character */
   return -1;
diff --git a/lib/unistr/u16-mbsnlen.c b/lib/unistr/u16-mbsnlen.c
index 68f8d67..13d0ba9 100644
--- a/lib/unistr/u16-mbsnlen.c
+++ b/lib/unistr/u16-mbsnlen.c
@@ -1,12 +1,21 @@
 /* Count characters in UTF-16 string.
-   Copyright (C) 2007, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2007.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u16-mbtouc-aux.c b/lib/unistr/u16-mbtouc-aux.c
index e4fb94b..87100e4 100644
--- a/lib/unistr/u16-mbtouc-aux.c
+++ b/lib/unistr/u16-mbtouc-aux.c
@@ -1,12 +1,21 @@
 /* Conversion UTF-16 to UCS-4.
-   Copyright (C) 2001-2002, 2006-2007, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2001-2002, 2006-2007, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2001.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u16-mbtouc-unsafe-aux.c b/lib/unistr/u16-mbtouc-unsafe-aux.c
index d616096..3282f8d 100644
--- a/lib/unistr/u16-mbtouc-unsafe-aux.c
+++ b/lib/unistr/u16-mbtouc-unsafe-aux.c
@@ -1,12 +1,21 @@
 /* Conversion UTF-16 to UCS-4.
-   Copyright (C) 2001-2002, 2006-2007, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2001-2002, 2006-2007, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2001.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
@@ -27,15 +36,11 @@ u16_mbtouc_unsafe_aux (ucs4_t *puc, const uint16_t *s, size_t n)
 {
   uint16_t c = *s;
 
-#if CONFIG_UNICODE_SAFETY
   if (c < 0xdc00)
-#endif
     {
       if (n >= 2)
         {
-#if CONFIG_UNICODE_SAFETY
           if (s[1] >= 0xdc00 && s[1] < 0xe000)
-#endif
             {
               *puc = 0x10000 + ((c - 0xd800) << 10) + (s[1] - 0xdc00);
               return 2;
diff --git a/lib/unistr/u16-mbtouc-unsafe.c b/lib/unistr/u16-mbtouc-unsafe.c
index fef8911..a525256 100644
--- a/lib/unistr/u16-mbtouc-unsafe.c
+++ b/lib/unistr/u16-mbtouc-unsafe.c
@@ -1,12 +1,21 @@
 /* Look at first character in UTF-16 string.
-   Copyright (C) 1999-2002, 2006-2007, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999-2002, 2006-2007, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2001.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
@@ -38,15 +47,11 @@ u16_mbtouc_unsafe (ucs4_t *puc, const uint16_t *s, size_t n)
       *puc = c;
       return 1;
     }
-#if CONFIG_UNICODE_SAFETY
   if (c < 0xdc00)
-#endif
     {
       if (n >= 2)
         {
-#if CONFIG_UNICODE_SAFETY
           if (s[1] >= 0xdc00 && s[1] < 0xe000)
-#endif
             {
               *puc = 0x10000 + ((c - 0xd800) << 10) + (s[1] - 0xdc00);
               return 2;
diff --git a/lib/unistr/u16-mbtouc.c b/lib/unistr/u16-mbtouc.c
index 7855ed4..643d623 100644
--- a/lib/unistr/u16-mbtouc.c
+++ b/lib/unistr/u16-mbtouc.c
@@ -1,12 +1,21 @@
 /* Look at first character in UTF-16 string.
-   Copyright (C) 1999-2002, 2006-2007, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999-2002, 2006-2007, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2001.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u16-mbtoucr.c b/lib/unistr/u16-mbtoucr.c
index 65b33b7..062d69c 100644
--- a/lib/unistr/u16-mbtoucr.c
+++ b/lib/unistr/u16-mbtoucr.c
@@ -1,12 +1,21 @@
 /* Look at first character in UTF-16 string, returning an error code.
-   Copyright (C) 1999-2002, 2006-2007, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999-2002, 2006-2007, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2001.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u16-move.c b/lib/unistr/u16-move.c
index 39a6fdd..8492a23 100644
--- a/lib/unistr/u16-move.c
+++ b/lib/unistr/u16-move.c
@@ -1,12 +1,21 @@
 /* Copy piece of UTF-16 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u16-next.c b/lib/unistr/u16-next.c
index 1621b68..ee41371 100644
--- a/lib/unistr/u16-next.c
+++ b/lib/unistr/u16-next.c
@@ -1,12 +1,21 @@
 /* Iterate over next character in UTF-16 string.
-   Copyright (C) 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u16-prev.c b/lib/unistr/u16-prev.c
index e1a6854..dc995c6 100644
--- a/lib/unistr/u16-prev.c
+++ b/lib/unistr/u16-prev.c
@@ -1,12 +1,21 @@
 /* Iterate over previous character in UTF-16 string.
-   Copyright (C) 2002, 2006-2007, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
@@ -33,16 +42,12 @@ u16_prev (ucs4_t *puc, const uint16_t *s, const uint16_t *start)
           *puc = c_1;
           return s - 1;
         }
-#if CONFIG_UNICODE_SAFETY
       if (c_1 >= 0xdc00)
-#endif
         if (s - 1 != start)
           {
             uint16_t c_2 = s[-2];
 
-#if CONFIG_UNICODE_SAFETY
             if (c_2 >= 0xd800 && c_2 < 0xdc00)
-#endif
               {
                 *puc = 0x10000 + ((c_2 - 0xd800) << 10) + (c_1 - 0xdc00);
                 return s - 2;
diff --git a/lib/unistr/u16-set.c b/lib/unistr/u16-set.c
index 58644b4..9af9cfe 100644
--- a/lib/unistr/u16-set.c
+++ b/lib/unistr/u16-set.c
@@ -1,12 +1,21 @@
 /* Fill UTF-16 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u16-startswith.c b/lib/unistr/u16-startswith.c
index feb1ebd..e450397 100644
--- a/lib/unistr/u16-startswith.c
+++ b/lib/unistr/u16-startswith.c
@@ -1,12 +1,21 @@
 /* Substring test for UTF-16 strings.
-   Copyright (C) 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u16-stpcpy.c b/lib/unistr/u16-stpcpy.c
index d49737f..ad87675 100644
--- a/lib/unistr/u16-stpcpy.c
+++ b/lib/unistr/u16-stpcpy.c
@@ -1,13 +1,22 @@
 /* Copy UTF-16 string.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2015 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2016 Free Software Foundation,
    Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u16-stpncpy.c b/lib/unistr/u16-stpncpy.c
index 315dad7..c7c583e 100644
--- a/lib/unistr/u16-stpncpy.c
+++ b/lib/unistr/u16-stpncpy.c
@@ -1,12 +1,21 @@
 /* Copy UTF-16 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u16-strcat.c b/lib/unistr/u16-strcat.c
index 9d933e1..2d1e252 100644
--- a/lib/unistr/u16-strcat.c
+++ b/lib/unistr/u16-strcat.c
@@ -1,12 +1,21 @@
 /* Concatenate UTF-16 strings.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u16-strchr.c b/lib/unistr/u16-strchr.c
index c89c174..8568002 100644
--- a/lib/unistr/u16-strchr.c
+++ b/lib/unistr/u16-strchr.c
@@ -1,13 +1,22 @@
 /* Search character in UTF-16 string.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2015 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2016 Free Software Foundation,
    Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u16-strcmp.c b/lib/unistr/u16-strcmp.c
index f9033ef..324d56d 100644
--- a/lib/unistr/u16-strcmp.c
+++ b/lib/unistr/u16-strcmp.c
@@ -1,12 +1,21 @@
 /* Compare UTF-16 strings.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u16-strcoll.c b/lib/unistr/u16-strcoll.c
index 2a6d757..590d610 100644
--- a/lib/unistr/u16-strcoll.c
+++ b/lib/unistr/u16-strcoll.c
@@ -1,12 +1,21 @@
 /* Compare UTF-16 strings using the collation rules of the current locale.
-   Copyright (C) 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u16-strcpy.c b/lib/unistr/u16-strcpy.c
index 5deb766..31321be 100644
--- a/lib/unistr/u16-strcpy.c
+++ b/lib/unistr/u16-strcpy.c
@@ -1,12 +1,21 @@
 /* Copy UTF-16 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u16-strcspn.c b/lib/unistr/u16-strcspn.c
index 52309b3..d52b005 100644
--- a/lib/unistr/u16-strcspn.c
+++ b/lib/unistr/u16-strcspn.c
@@ -1,12 +1,21 @@
 /* Search for some characters in UTF-16 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u16-strdup.c b/lib/unistr/u16-strdup.c
index 61144d7..c8df8f6 100644
--- a/lib/unistr/u16-strdup.c
+++ b/lib/unistr/u16-strdup.c
@@ -1,12 +1,21 @@
 /* Copy UTF-16 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u16-strlen.c b/lib/unistr/u16-strlen.c
index 6a96c91..5148dc2 100644
--- a/lib/unistr/u16-strlen.c
+++ b/lib/unistr/u16-strlen.c
@@ -1,12 +1,21 @@
 /* Determine length of UTF-16 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u16-strmblen.c b/lib/unistr/u16-strmblen.c
index 1004ef1..5013abf 100644
--- a/lib/unistr/u16-strmblen.c
+++ b/lib/unistr/u16-strmblen.c
@@ -1,13 +1,22 @@
 /* Look at first character in UTF-16 string.
-   Copyright (C) 1999-2000, 2002, 2006-2007, 2009-2015 Free Software
+   Copyright (C) 1999-2000, 2002, 2006-2007, 2009-2016 Free Software
    Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
@@ -24,21 +33,16 @@
 int
 u16_strmblen (const uint16_t *s)
 {
-  /* Keep in sync with unistr.h and utf16-ucs4.c.  */
+  /* Keep in sync with unistr.h and u16-mbtouc-aux.c.  */
   uint16_t c = *s;
 
   if (c < 0xd800 || c >= 0xe000)
     return (c != 0 ? 1 : 0);
-#if CONFIG_UNICODE_SAFETY
   if (c < 0xdc00)
     {
       if (s[1] >= 0xdc00 && s[1] < 0xe000)
         return 2;
     }
-#else
-  if (s[1] != 0)
-    return 2;
-#endif
   /* invalid or incomplete multibyte character */
   return -1;
 }
diff --git a/lib/unistr/u16-strmbtouc.c b/lib/unistr/u16-strmbtouc.c
index 89661e7..82f59c3 100644
--- a/lib/unistr/u16-strmbtouc.c
+++ b/lib/unistr/u16-strmbtouc.c
@@ -1,13 +1,22 @@
 /* Look at first character in UTF-16 string.
-   Copyright (C) 1999-2000, 2002, 2006-2007, 2009-2015 Free Software
+   Copyright (C) 1999-2000, 2002, 2006-2007, 2009-2016 Free Software
    Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
@@ -24,7 +33,7 @@
 int
 u16_strmbtouc (ucs4_t *puc, const uint16_t *s)
 {
-  /* Keep in sync with unistr.h and utf16-ucs4.c.  */
+  /* Keep in sync with unistr.h and u16-mbtouc-aux.c.  */
   uint16_t c = *s;
 
   if (c < 0xd800 || c >= 0xe000)
@@ -32,15 +41,9 @@ u16_strmbtouc (ucs4_t *puc, const uint16_t *s)
       *puc = c;
       return (c != 0 ? 1 : 0);
     }
-#if CONFIG_UNICODE_SAFETY
   if (c < 0xdc00)
-#endif
     {
-#if CONFIG_UNICODE_SAFETY
       if (s[1] >= 0xdc00 && s[1] < 0xe000)
-#else
-      if (s[1] != 0)
-#endif
         {
           *puc = 0x10000 + ((c - 0xd800) << 10) + (s[1] - 0xdc00);
           return 2;
diff --git a/lib/unistr/u16-strncat.c b/lib/unistr/u16-strncat.c
index cf1c4f9..e235207 100644
--- a/lib/unistr/u16-strncat.c
+++ b/lib/unistr/u16-strncat.c
@@ -1,12 +1,21 @@
 /* Concatenate UTF-16 strings.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u16-strncmp.c b/lib/unistr/u16-strncmp.c
index c76e7b7..0c782e5 100644
--- a/lib/unistr/u16-strncmp.c
+++ b/lib/unistr/u16-strncmp.c
@@ -1,12 +1,21 @@
 /* Compare UTF-16 strings.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u16-strncpy.c b/lib/unistr/u16-strncpy.c
index da7ebb8..9c350bf 100644
--- a/lib/unistr/u16-strncpy.c
+++ b/lib/unistr/u16-strncpy.c
@@ -1,12 +1,21 @@
 /* Copy UTF-16 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u16-strnlen.c b/lib/unistr/u16-strnlen.c
index 4940e02..91dfbf7 100644
--- a/lib/unistr/u16-strnlen.c
+++ b/lib/unistr/u16-strnlen.c
@@ -1,12 +1,21 @@
 /* Determine bounded length of UTF-16 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u16-strpbrk.c b/lib/unistr/u16-strpbrk.c
index 60ec122..1739a2c 100644
--- a/lib/unistr/u16-strpbrk.c
+++ b/lib/unistr/u16-strpbrk.c
@@ -1,12 +1,21 @@
 /* Search for some characters in UTF-16 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u16-strrchr.c b/lib/unistr/u16-strrchr.c
index 3179a8d..d1cca43 100644
--- a/lib/unistr/u16-strrchr.c
+++ b/lib/unistr/u16-strrchr.c
@@ -1,13 +1,22 @@
 /* Search character in UTF-16 string.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2015 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2016 Free Software Foundation,
    Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u16-strspn.c b/lib/unistr/u16-strspn.c
index 4a0194f..78b60c0 100644
--- a/lib/unistr/u16-strspn.c
+++ b/lib/unistr/u16-strspn.c
@@ -1,12 +1,21 @@
 /* Search for some characters in UTF-16 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u16-strstr.c b/lib/unistr/u16-strstr.c
index 5b87e81..fe0f1bd 100644
--- a/lib/unistr/u16-strstr.c
+++ b/lib/unistr/u16-strstr.c
@@ -1,12 +1,21 @@
 /* Substring test for UTF-16 strings.
-   Copyright (C) 1999, 2002, 2006, 2010-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2010-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u16-strtok.c b/lib/unistr/u16-strtok.c
index df36cf7..17c36da 100644
--- a/lib/unistr/u16-strtok.c
+++ b/lib/unistr/u16-strtok.c
@@ -1,12 +1,21 @@
 /* Tokenize UTF-16 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u16-to-u32.c b/lib/unistr/u16-to-u32.c
index 8acee50..3196dc2 100644
--- a/lib/unistr/u16-to-u32.c
+++ b/lib/unistr/u16-to-u32.c
@@ -1,12 +1,21 @@
 /* Convert UTF-16 string to UTF-32 string.
-   Copyright (C) 2002, 2006-2007, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u16-to-u8.c b/lib/unistr/u16-to-u8.c
index 3e93a94..3cf5e1c 100644
--- a/lib/unistr/u16-to-u8.c
+++ b/lib/unistr/u16-to-u8.c
@@ -1,12 +1,21 @@
 /* Convert UTF-16 string to UTF-8 string.
-   Copyright (C) 2002, 2006-2007, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u16-uctomb-aux.c b/lib/unistr/u16-uctomb-aux.c
index 55d7a14..d3889b4 100644
--- a/lib/unistr/u16-uctomb-aux.c
+++ b/lib/unistr/u16-uctomb-aux.c
@@ -1,12 +1,21 @@
 /* Conversion UCS-4 to UTF-16.
-   Copyright (C) 2002, 2006-2007, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u16-uctomb.c b/lib/unistr/u16-uctomb.c
index b93fa6f..58484d0 100644
--- a/lib/unistr/u16-uctomb.c
+++ b/lib/unistr/u16-uctomb.c
@@ -1,12 +1,21 @@
 /* Store a character in UTF-16 string.
-   Copyright (C) 2002, 2005-2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2005-2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u32-check.c b/lib/unistr/u32-check.c
index 53b722b..3d174d7 100644
--- a/lib/unistr/u32-check.c
+++ b/lib/unistr/u32-check.c
@@ -1,12 +1,21 @@
 /* Check UTF-32 string.
-   Copyright (C) 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u32-chr.c b/lib/unistr/u32-chr.c
index 1470c22..35c8570 100644
--- a/lib/unistr/u32-chr.c
+++ b/lib/unistr/u32-chr.c
@@ -1,12 +1,21 @@
 /* Search character in piece of UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u32-cmp.c b/lib/unistr/u32-cmp.c
index 7799e38..a4e69fd 100644
--- a/lib/unistr/u32-cmp.c
+++ b/lib/unistr/u32-cmp.c
@@ -1,12 +1,21 @@
 /* Compare pieces of UTF-32 strings.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u32-cmp2.c b/lib/unistr/u32-cmp2.c
index b4e0a1b..f970c4d 100644
--- a/lib/unistr/u32-cmp2.c
+++ b/lib/unistr/u32-cmp2.c
@@ -1,12 +1,21 @@
 /* Compare pieces of UTF-32 strings.
-   Copyright (C) 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u32-cpy-alloc.c b/lib/unistr/u32-cpy-alloc.c
index 3e94298..75450fc 100644
--- a/lib/unistr/u32-cpy-alloc.c
+++ b/lib/unistr/u32-cpy-alloc.c
@@ -1,12 +1,21 @@
 /* Copy piece of UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u32-cpy.c b/lib/unistr/u32-cpy.c
index ab5a451..4cb71ed 100644
--- a/lib/unistr/u32-cpy.c
+++ b/lib/unistr/u32-cpy.c
@@ -1,12 +1,21 @@
 /* Copy piece of UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u32-endswith.c b/lib/unistr/u32-endswith.c
index 3960c8a..2bf2e6a 100644
--- a/lib/unistr/u32-endswith.c
+++ b/lib/unistr/u32-endswith.c
@@ -1,12 +1,21 @@
 /* Substring test for UTF-32 strings.
-   Copyright (C) 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u32-mblen.c b/lib/unistr/u32-mblen.c
index 45a9f49..af28d64 100644
--- a/lib/unistr/u32-mblen.c
+++ b/lib/unistr/u32-mblen.c
@@ -1,12 +1,21 @@
 /* Look at first character in UTF-32 string.
-   Copyright (C) 2002, 2006-2007, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
@@ -27,9 +36,7 @@ u32_mblen (const uint32_t *s, size_t n)
     {
       uint32_t c = *s;
 
-#if CONFIG_UNICODE_SAFETY
       if (c < 0xd800 || (c >= 0xe000 && c < 0x110000))
-#endif
         return (c != 0 ? 1 : 0);
     }
   /* invalid or incomplete multibyte character */
diff --git a/lib/unistr/u32-mbsnlen.c b/lib/unistr/u32-mbsnlen.c
index 371959e..34103be 100644
--- a/lib/unistr/u32-mbsnlen.c
+++ b/lib/unistr/u32-mbsnlen.c
@@ -1,12 +1,21 @@
 /* Count characters in UTF-32 string.
-   Copyright (C) 2007, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2007.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u32-mbtouc-unsafe.c b/lib/unistr/u32-mbtouc-unsafe.c
index 3244811..bb0a13e 100644
--- a/lib/unistr/u32-mbtouc-unsafe.c
+++ b/lib/unistr/u32-mbtouc-unsafe.c
@@ -1,12 +1,21 @@
 /* Look at first character in UTF-32 string.
-   Copyright (C) 2002, 2006-2007, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
@@ -33,15 +42,11 @@ u32_mbtouc_unsafe (ucs4_t *puc, const uint32_t *s, size_t n)
 {
   uint32_t c = *s;
 
-#if CONFIG_UNICODE_SAFETY
   if (c < 0xd800 || (c >= 0xe000 && c < 0x110000))
-#endif
     *puc = c;
-#if CONFIG_UNICODE_SAFETY
   else
     /* invalid multibyte character */
     *puc = 0xfffd;
-#endif
   return 1;
 }
 
diff --git a/lib/unistr/u32-mbtouc.c b/lib/unistr/u32-mbtouc.c
index 5d4de51..6854098 100644
--- a/lib/unistr/u32-mbtouc.c
+++ b/lib/unistr/u32-mbtouc.c
@@ -1,12 +1,21 @@
 /* Look at first character in UTF-32 string.
-   Copyright (C) 2002, 2006-2007, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u32-mbtoucr.c b/lib/unistr/u32-mbtoucr.c
index faa5695..7b0e809 100644
--- a/lib/unistr/u32-mbtoucr.c
+++ b/lib/unistr/u32-mbtoucr.c
@@ -1,12 +1,21 @@
 /* Look at first character in UTF-32 string, returning an error code.
-   Copyright (C) 2002, 2006-2007, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u32-move.c b/lib/unistr/u32-move.c
index fc2aab1..89f781b 100644
--- a/lib/unistr/u32-move.c
+++ b/lib/unistr/u32-move.c
@@ -1,12 +1,21 @@
 /* Copy piece of UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u32-next.c b/lib/unistr/u32-next.c
index 8be330e..770e90e 100644
--- a/lib/unistr/u32-next.c
+++ b/lib/unistr/u32-next.c
@@ -1,12 +1,21 @@
 /* Iterate over next character in UTF-32 string.
-   Copyright (C) 2002, 2006-2007, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
@@ -30,10 +39,8 @@ u32_next (ucs4_t *puc, const uint32_t *s)
     return s + count;
   else
     {
-#if CONFIG_UNICODE_SAFETY
       if (count < 0)
         *puc = 0xfffd;
-#endif
       return NULL;
     }
 }
diff --git a/lib/unistr/u32-prev.c b/lib/unistr/u32-prev.c
index 127029d..401d3cb 100644
--- a/lib/unistr/u32-prev.c
+++ b/lib/unistr/u32-prev.c
@@ -1,12 +1,21 @@
 /* Iterate over previous character in UTF-32 string.
-   Copyright (C) 2002, 2006-2007, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
@@ -27,9 +36,7 @@ u32_prev (ucs4_t *puc, const uint32_t *s, const uint32_t *start)
     {
       uint32_t c_1 = s[-1];
 
-#if CONFIG_UNICODE_SAFETY
       if (c_1 < 0xd800 || (c_1 >= 0xe000 && c_1 < 0x110000))
-#endif
         {
           *puc = c_1;
           return s - 1;
diff --git a/lib/unistr/u32-set.c b/lib/unistr/u32-set.c
index a60f5a8..0ad6cb2 100644
--- a/lib/unistr/u32-set.c
+++ b/lib/unistr/u32-set.c
@@ -1,12 +1,21 @@
 /* Fill UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u32-startswith.c b/lib/unistr/u32-startswith.c
index 817310f..134acdb 100644
--- a/lib/unistr/u32-startswith.c
+++ b/lib/unistr/u32-startswith.c
@@ -1,12 +1,21 @@
 /* Substring test for UTF-32 strings.
-   Copyright (C) 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u32-stpcpy.c b/lib/unistr/u32-stpcpy.c
index fdd5f5e..dffe8bb 100644
--- a/lib/unistr/u32-stpcpy.c
+++ b/lib/unistr/u32-stpcpy.c
@@ -1,12 +1,21 @@
 /* Copy UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u32-stpncpy.c b/lib/unistr/u32-stpncpy.c
index 124101e..6440267 100644
--- a/lib/unistr/u32-stpncpy.c
+++ b/lib/unistr/u32-stpncpy.c
@@ -1,12 +1,21 @@
 /* Copy UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u32-strcat.c b/lib/unistr/u32-strcat.c
index 5e51c58..f930695 100644
--- a/lib/unistr/u32-strcat.c
+++ b/lib/unistr/u32-strcat.c
@@ -1,12 +1,21 @@
 /* Concatenate UTF-32 strings.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u32-strchr.c b/lib/unistr/u32-strchr.c
index 355ad27..a419842 100644
--- a/lib/unistr/u32-strchr.c
+++ b/lib/unistr/u32-strchr.c
@@ -1,12 +1,21 @@
 /* Search character in UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u32-strcmp.c b/lib/unistr/u32-strcmp.c
index 16f9b1e..cb96d94 100644
--- a/lib/unistr/u32-strcmp.c
+++ b/lib/unistr/u32-strcmp.c
@@ -1,12 +1,21 @@
 /* Compare UTF-32 strings.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u32-strcoll.c b/lib/unistr/u32-strcoll.c
index 7865f4c..45e66f6 100644
--- a/lib/unistr/u32-strcoll.c
+++ b/lib/unistr/u32-strcoll.c
@@ -1,12 +1,21 @@
 /* Compare UTF-32 strings using the collation rules of the current locale.
-   Copyright (C) 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u32-strcpy.c b/lib/unistr/u32-strcpy.c
index 9f325bc..8872f2e 100644
--- a/lib/unistr/u32-strcpy.c
+++ b/lib/unistr/u32-strcpy.c
@@ -1,12 +1,21 @@
 /* Copy UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u32-strcspn.c b/lib/unistr/u32-strcspn.c
index 963c732..13a27a9 100644
--- a/lib/unistr/u32-strcspn.c
+++ b/lib/unistr/u32-strcspn.c
@@ -1,12 +1,21 @@
 /* Search for some characters in UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u32-strdup.c b/lib/unistr/u32-strdup.c
index 3af4622..93293a6 100644
--- a/lib/unistr/u32-strdup.c
+++ b/lib/unistr/u32-strdup.c
@@ -1,12 +1,21 @@
 /* Copy UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u32-strlen.c b/lib/unistr/u32-strlen.c
index b87f55d..9cdd837 100644
--- a/lib/unistr/u32-strlen.c
+++ b/lib/unistr/u32-strlen.c
@@ -1,12 +1,21 @@
 /* Determine length of UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u32-strmblen.c b/lib/unistr/u32-strmblen.c
index 362ea48..7ca14f4 100644
--- a/lib/unistr/u32-strmblen.c
+++ b/lib/unistr/u32-strmblen.c
@@ -1,12 +1,21 @@
 /* Look at first character in UTF-32 string.
-   Copyright (C) 2002, 2006-2007, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
@@ -25,12 +34,8 @@ u32_strmblen (const uint32_t *s)
 {
   uint32_t c = *s;
 
-#if CONFIG_UNICODE_SAFETY
   if (c < 0xd800 || (c >= 0xe000 && c < 0x110000))
-#endif
     return (c != 0 ? 1 : 0);
-#if CONFIG_UNICODE_SAFETY
   /* invalid multibyte character */
   return -1;
-#endif
 }
diff --git a/lib/unistr/u32-strmbtouc.c b/lib/unistr/u32-strmbtouc.c
index cfa89d0..dabe648 100644
--- a/lib/unistr/u32-strmbtouc.c
+++ b/lib/unistr/u32-strmbtouc.c
@@ -1,12 +1,21 @@
 /* Look at first character in UTF-32 string.
-   Copyright (C) 2002, 2006-2007, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
@@ -25,15 +34,11 @@ u32_strmbtouc (ucs4_t *puc, const uint32_t *s)
 {
   uint32_t c = *s;
 
-#if CONFIG_UNICODE_SAFETY
   if (c < 0xd800 || (c >= 0xe000 && c < 0x110000))
-#endif
     {
       *puc = c;
       return (c != 0 ? 1 : 0);
     }
-#if CONFIG_UNICODE_SAFETY
   /* invalid multibyte character */
   return -1;
-#endif
 }
diff --git a/lib/unistr/u32-strncat.c b/lib/unistr/u32-strncat.c
index 4758f4d..0b1ea3e 100644
--- a/lib/unistr/u32-strncat.c
+++ b/lib/unistr/u32-strncat.c
@@ -1,12 +1,21 @@
 /* Concatenate UTF-32 strings.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u32-strncmp.c b/lib/unistr/u32-strncmp.c
index f4222f6..95c747d 100644
--- a/lib/unistr/u32-strncmp.c
+++ b/lib/unistr/u32-strncmp.c
@@ -1,12 +1,21 @@
 /* Compare UTF-32 strings.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u32-strncpy.c b/lib/unistr/u32-strncpy.c
index 1f4c31b..d5e1c81 100644
--- a/lib/unistr/u32-strncpy.c
+++ b/lib/unistr/u32-strncpy.c
@@ -1,12 +1,21 @@
 /* Copy UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u32-strnlen.c b/lib/unistr/u32-strnlen.c
index df3601f..d0e8c03 100644
--- a/lib/unistr/u32-strnlen.c
+++ b/lib/unistr/u32-strnlen.c
@@ -1,12 +1,21 @@
 /* Determine bounded length of UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u32-strpbrk.c b/lib/unistr/u32-strpbrk.c
index c9cca79..1c4ac2e 100644
--- a/lib/unistr/u32-strpbrk.c
+++ b/lib/unistr/u32-strpbrk.c
@@ -1,12 +1,21 @@
 /* Search for some characters in UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u32-strrchr.c b/lib/unistr/u32-strrchr.c
index 242d4b8..b26b9f7 100644
--- a/lib/unistr/u32-strrchr.c
+++ b/lib/unistr/u32-strrchr.c
@@ -1,12 +1,21 @@
 /* Search character in UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u32-strspn.c b/lib/unistr/u32-strspn.c
index 2541e79..50d6dc9 100644
--- a/lib/unistr/u32-strspn.c
+++ b/lib/unistr/u32-strspn.c
@@ -1,12 +1,21 @@
 /* Search for some characters in UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u32-strstr.c b/lib/unistr/u32-strstr.c
index c8abe5b..a144e3b 100644
--- a/lib/unistr/u32-strstr.c
+++ b/lib/unistr/u32-strstr.c
@@ -1,12 +1,21 @@
 /* Substring test for UTF-32 strings.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u32-strtok.c b/lib/unistr/u32-strtok.c
index f8ef999..75a132b 100644
--- a/lib/unistr/u32-strtok.c
+++ b/lib/unistr/u32-strtok.c
@@ -1,12 +1,21 @@
 /* Tokenize UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u32-to-u16.c b/lib/unistr/u32-to-u16.c
index e02e782..29fd0ed 100644
--- a/lib/unistr/u32-to-u16.c
+++ b/lib/unistr/u32-to-u16.c
@@ -1,12 +1,21 @@
 /* Convert UTF-32 string to UTF-16 string.
-   Copyright (C) 2002, 2006-2007, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u32-to-u8.c b/lib/unistr/u32-to-u8.c
index 0c4f4cb..190ae7d 100644
--- a/lib/unistr/u32-to-u8.c
+++ b/lib/unistr/u32-to-u8.c
@@ -1,12 +1,21 @@
 /* Convert UTF-32 string to UTF-8 string.
-   Copyright (C) 2002, 2006-2007, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u32-uctomb.c b/lib/unistr/u32-uctomb.c
index 18b2f0d..2bda334 100644
--- a/lib/unistr/u32-uctomb.c
+++ b/lib/unistr/u32-uctomb.c
@@ -1,12 +1,21 @@
 /* Store a character in UTF-32 string.
-   Copyright (C) 2002, 2005-2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2005-2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u8-check.c b/lib/unistr/u8-check.c
index 53ece76..71658d9 100644
--- a/lib/unistr/u8-check.c
+++ b/lib/unistr/u8-check.c
@@ -1,12 +1,21 @@
 /* Check UTF-8 string.
-   Copyright (C) 2002, 2006-2007, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
@@ -63,40 +72,12 @@ u8_check (const uint8_t *s, size_t n)
                   && (s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
                   && (s[3] ^ 0x80) < 0x40
                   && (c >= 0xf1 || s[1] >= 0x90)
-#if 1
-                  && (c < 0xf4 || (c == 0xf4 && s[1] < 0x90))
-#endif
-                 )
+                  && (c < 0xf4 || (c == 0xf4 && s[1] < 0x90)))
                 {
                   s += 4;
                   continue;
                 }
             }
-#if 0
-          else if (c < 0xfc)
-            {
-              if (s + 5 <= s_end
-                  && (s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
-                  && (s[3] ^ 0x80) < 0x40 && (s[4] ^ 0x80) < 0x40
-                  && (c >= 0xf9 || s[1] >= 0x88))
-                {
-                  s += 5;
-                  continue;
-                }
-            }
-          else if (c < 0xfe)
-            {
-              if (s + 6 <= s_end
-                  && (s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
-                  && (s[3] ^ 0x80) < 0x40 && (s[4] ^ 0x80) < 0x40
-                  && (s[5] ^ 0x80) < 0x40
-                  && (c >= 0xfd || s[1] >= 0x84))
-                {
-                  s += 6;
-                  continue;
-                }
-            }
-#endif
         }
       /* invalid or incomplete multibyte character */
       return s;
diff --git a/lib/unistr/u8-chr.c b/lib/unistr/u8-chr.c
index c7779d2..a62fe63 100644
--- a/lib/unistr/u8-chr.c
+++ b/lib/unistr/u8-chr.c
@@ -1,13 +1,22 @@
 /* Search character in piece of UTF-8 string.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2015 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2016 Free Software Foundation,
    Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u8-cmp.c b/lib/unistr/u8-cmp.c
index 402de81..7abfd8c 100644
--- a/lib/unistr/u8-cmp.c
+++ b/lib/unistr/u8-cmp.c
@@ -1,12 +1,21 @@
 /* Compare pieces of UTF-8 strings.
-   Copyright (C) 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u8-cmp2.c b/lib/unistr/u8-cmp2.c
index dbbc8ed..feeddd3 100644
--- a/lib/unistr/u8-cmp2.c
+++ b/lib/unistr/u8-cmp2.c
@@ -1,12 +1,21 @@
 /* Compare pieces of UTF-8 strings.
-   Copyright (C) 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u8-cpy-alloc.c b/lib/unistr/u8-cpy-alloc.c
index 1e3910a..2f36463 100644
--- a/lib/unistr/u8-cpy-alloc.c
+++ b/lib/unistr/u8-cpy-alloc.c
@@ -1,12 +1,21 @@
 /* Copy piece of UTF-8 string.
-   Copyright (C) 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u8-cpy.c b/lib/unistr/u8-cpy.c
index 683200c..86fe0ae 100644
--- a/lib/unistr/u8-cpy.c
+++ b/lib/unistr/u8-cpy.c
@@ -1,12 +1,21 @@
 /* Copy piece of UTF-8 string.
-   Copyright (C) 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u8-endswith.c b/lib/unistr/u8-endswith.c
index a835dc4..1813b1e 100644
--- a/lib/unistr/u8-endswith.c
+++ b/lib/unistr/u8-endswith.c
@@ -1,12 +1,21 @@
 /* Substring test for UTF-8 strings.
-   Copyright (C) 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u8-mblen.c b/lib/unistr/u8-mblen.c
index 131149b..a30ea9b 100644
--- a/lib/unistr/u8-mblen.c
+++ b/lib/unistr/u8-mblen.c
@@ -1,13 +1,22 @@
 /* Look at first character in UTF-8 string.
-   Copyright (C) 1999-2000, 2002, 2006-2007, 2009-2015 Free Software
+   Copyright (C) 1999-2000, 2002, 2006-2007, 2009-2016 Free Software
    Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
@@ -36,62 +45,26 @@ u8_mblen (const uint8_t *s, size_t n)
           if (c < 0xe0)
             {
               if (n >= 2
-#if CONFIG_UNICODE_SAFETY
-                  && (s[1] ^ 0x80) < 0x40
-#endif
-                 )
+                  && (s[1] ^ 0x80) < 0x40)
                 return 2;
             }
           else if (c < 0xf0)
             {
               if (n >= 3
-#if CONFIG_UNICODE_SAFETY
                   && (s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
                   && (c >= 0xe1 || s[1] >= 0xa0)
-                  && (c != 0xed || s[1] < 0xa0)
-#endif
-                 )
+                  && (c != 0xed || s[1] < 0xa0))
                 return 3;
             }
           else if (c < 0xf8)
             {
               if (n >= 4
-#if CONFIG_UNICODE_SAFETY
                   && (s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
                   && (s[3] ^ 0x80) < 0x40
                   && (c >= 0xf1 || s[1] >= 0x90)
-#if 1
-                  && (c < 0xf4 || (c == 0xf4 && s[1] < 0x90))
-#endif
-#endif
-                 )
+                  && (c < 0xf4 || (c == 0xf4 && s[1] < 0x90)))
                 return 4;
             }
-#if 0
-          else if (c < 0xfc)
-            {
-              if (n >= 5
-#if CONFIG_UNICODE_SAFETY
-                  && (s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
-                  && (s[3] ^ 0x80) < 0x40 && (s[4] ^ 0x80) < 0x40
-                  && (c >= 0xf9 || s[1] >= 0x88)
-#endif
-                 )
-                return 5;
-            }
-          else if (c < 0xfe)
-            {
-              if (n >= 6
-#if CONFIG_UNICODE_SAFETY
-                  && (s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
-                  && (s[3] ^ 0x80) < 0x40 && (s[4] ^ 0x80) < 0x40
-                  && (s[5] ^ 0x80) < 0x40
-                  && (c >= 0xfd || s[1] >= 0x84)
-#endif
-                 )
-                return 6;
-            }
-#endif
         }
     }
   /* invalid or incomplete multibyte character */
diff --git a/lib/unistr/u8-mbsnlen.c b/lib/unistr/u8-mbsnlen.c
index ce13c38..7ec682f 100644
--- a/lib/unistr/u8-mbsnlen.c
+++ b/lib/unistr/u8-mbsnlen.c
@@ -1,12 +1,21 @@
 /* Count characters in UTF-8 string.
-   Copyright (C) 2007, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2007.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u8-mbtouc-aux.c b/lib/unistr/u8-mbtouc-aux.c
index 834725f..7426e92 100644
--- a/lib/unistr/u8-mbtouc-aux.c
+++ b/lib/unistr/u8-mbtouc-aux.c
@@ -1,12 +1,21 @@
 /* Conversion UTF-8 to UCS-4.
-   Copyright (C) 2001-2002, 2006-2007, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2001-2002, 2006-2007, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2001.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
@@ -95,10 +104,7 @@ u8_mbtouc_aux (ucs4_t *puc, const uint8_t *s, size_t n)
                       if ((s[3] ^ 0x80) < 0x40)
                         {
                           if ((c >= 0xf1 || s[1] >= 0x90)
-#if 1
-                              && (c < 0xf4 || (c == 0xf4 && s[1] < 0x90))
-#endif
-                             )
+                              && (c < 0xf4 || (c == 0xf4 && s[1] < 0x90)))
                             {
                               *puc = ((unsigned int) (c & 0x07) << 18)
                                      | ((unsigned int) (s[1] ^ 0x80) << 12)
@@ -132,105 +138,6 @@ u8_mbtouc_aux (ucs4_t *puc, const uint8_t *s, size_t n)
                 return 3;
             }
         }
-#if 0
-      else if (c < 0xfc)
-        {
-          if (n >= 5)
-            {
-              if ((s[1] ^ 0x80) < 0x40)
-                {
-                  if ((s[2] ^ 0x80) < 0x40)
-                    {
-                      if ((s[3] ^ 0x80) < 0x40)
-                        {
-                          if ((s[4] ^ 0x80) < 0x40)
-                            {
-                              if (c >= 0xf9 || s[1] >= 0x88)
-                                {
-                                  *puc = ((unsigned int) (c & 0x03) << 24)
-                                         | ((unsigned int) (s[1] ^ 0x80) << 18)
-                                         | ((unsigned int) (s[2] ^ 0x80) << 12)
-                                         | ((unsigned int) (s[3] ^ 0x80) << 6)
-                                         | (unsigned int) (s[4] ^ 0x80);
-                                  return 5;
-                                }
-                              /* invalid multibyte character */
-                              *puc = 0xfffd;
-                              return 5;
-                            }
-                          /* invalid multibyte character */
-                          *puc = 0xfffd;
-                          return 4;
-                        }
-                      /* invalid multibyte character */
-                      *puc = 0xfffd;
-                      return 3;
-                    }
-                  /* invalid multibyte character */
-                  return 2;
-                }
-              /* invalid multibyte character */
-            }
-          else
-            {
-              /* incomplete multibyte character */
-              *puc = 0xfffd;
-              return n;
-            }
-        }
-      else if (c < 0xfe)
-        {
-          if (n >= 6)
-            {
-              if ((s[1] ^ 0x80) < 0x40)
-                {
-                  if ((s[2] ^ 0x80) < 0x40)
-                    {
-                      if ((s[3] ^ 0x80) < 0x40)
-                        {
-                          if ((s[4] ^ 0x80) < 0x40)
-                            {
-                              if ((s[5] ^ 0x80) < 0x40)
-                                {
-                                  if (c >= 0xfd || s[1] >= 0x84)
-                                    {
-                                      *puc = ((unsigned int) (c & 0x01) << 30)
-                                             | ((unsigned int) (s[1] ^ 0x80) << 24)
-                                             | ((unsigned int) (s[2] ^ 0x80) << 18)
-                                             | ((unsigned int) (s[3] ^ 0x80) << 12)
-                                             | ((unsigned int) (s[4] ^ 0x80) << 6)
-                                             | (unsigned int) (s[5] ^ 0x80);
-                                      return 6;
-                                    }
-                                  /* invalid multibyte character */
-                                  *puc = 0xfffd;
-                                  return 6;
-                                }
-                              /* invalid multibyte character */
-                              *puc = 0xfffd;
-                              return 5;
-                            }
-                          /* invalid multibyte character */
-                          *puc = 0xfffd;
-                          return 4;
-                        }
-                      /* invalid multibyte character */
-                      *puc = 0xfffd;
-                      return 3;
-                    }
-                  /* invalid multibyte character */
-                  return 2;
-                }
-              /* invalid multibyte character */
-            }
-          else
-            {
-              /* incomplete multibyte character */
-              *puc = 0xfffd;
-              return n;
-            }
-        }
-#endif
     }
   /* invalid multibyte character */
   *puc = 0xfffd;
diff --git a/lib/unistr/u8-mbtouc-unsafe-aux.c b/lib/unistr/u8-mbtouc-unsafe-aux.c
index b406d3e..80cdcca 100644
--- a/lib/unistr/u8-mbtouc-unsafe-aux.c
+++ b/lib/unistr/u8-mbtouc-unsafe-aux.c
@@ -1,12 +1,21 @@
 /* Conversion UTF-8 to UCS-4.
-   Copyright (C) 2001-2002, 2006-2007, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2001-2002, 2006-2007, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2001.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
@@ -33,17 +42,13 @@ u8_mbtouc_unsafe_aux (ucs4_t *puc, const uint8_t *s, size_t n)
         {
           if (n >= 2)
             {
-#if CONFIG_UNICODE_SAFETY
               if ((s[1] ^ 0x80) < 0x40)
-#endif
                 {
                   *puc = ((unsigned int) (c & 0x1f) << 6)
                          | (unsigned int) (s[1] ^ 0x80);
                   return 2;
                 }
-#if CONFIG_UNICODE_SAFETY
               /* invalid multibyte character */
-#endif
             }
           else
             {
@@ -56,21 +61,18 @@ u8_mbtouc_unsafe_aux (ucs4_t *puc, const uint8_t *s, size_t n)
         {
           if (n >= 3)
             {
-#if CONFIG_UNICODE_SAFETY
               if ((s[1] ^ 0x80) < 0x40)
                 {
                   if ((s[2] ^ 0x80) < 0x40)
                     {
                       if ((c >= 0xe1 || s[1] >= 0xa0)
                           && (c != 0xed || s[1] < 0xa0))
-#endif
                         {
                           *puc = ((unsigned int) (c & 0x0f) << 12)
                                  | ((unsigned int) (s[1] ^ 0x80) << 6)
                                  | (unsigned int) (s[2] ^ 0x80);
                           return 3;
                         }
-#if CONFIG_UNICODE_SAFETY
                       /* invalid multibyte character */
                       *puc = 0xfffd;
                       return 3;
@@ -80,7 +82,6 @@ u8_mbtouc_unsafe_aux (ucs4_t *puc, const uint8_t *s, size_t n)
                   return 2;
                 }
               /* invalid multibyte character */
-#endif
             }
           else
             {
@@ -96,7 +97,6 @@ u8_mbtouc_unsafe_aux (ucs4_t *puc, const uint8_t *s, size_t n)
         {
           if (n >= 4)
             {
-#if CONFIG_UNICODE_SAFETY
               if ((s[1] ^ 0x80) < 0x40)
                 {
                   if ((s[2] ^ 0x80) < 0x40)
@@ -104,11 +104,8 @@ u8_mbtouc_unsafe_aux (ucs4_t *puc, const uint8_t *s, size_t n)
                       if ((s[3] ^ 0x80) < 0x40)
                         {
                           if ((c >= 0xf1 || s[1] >= 0x90)
-#if 1
                               && (c < 0xf4 || (c == 0xf4 && s[1] < 0x90))
-#endif
                              )
-#endif
                             {
                               *puc = ((unsigned int) (c & 0x07) << 18)
                                      | ((unsigned int) (s[1] ^ 0x80) << 12)
@@ -116,7 +113,6 @@ u8_mbtouc_unsafe_aux (ucs4_t *puc, const uint8_t *s, size_t n)
                                      | (unsigned int) (s[3] ^ 0x80);
                               return 4;
                             }
-#if CONFIG_UNICODE_SAFETY
                           /* invalid multibyte character */
                           *puc = 0xfffd;
                           return 4;
@@ -130,7 +126,6 @@ u8_mbtouc_unsafe_aux (ucs4_t *puc, const uint8_t *s, size_t n)
                   return 2;
                 }
               /* invalid multibyte character */
-#endif
             }
           else
             {
@@ -144,113 +139,6 @@ u8_mbtouc_unsafe_aux (ucs4_t *puc, const uint8_t *s, size_t n)
                 return 3;
             }
         }
-#if 0
-      else if (c < 0xfc)
-        {
-          if (n >= 5)
-            {
-#if CONFIG_UNICODE_SAFETY
-              if ((s[1] ^ 0x80) < 0x40)
-                {
-                  if ((s[2] ^ 0x80) < 0x40)
-                    {
-                      if ((s[3] ^ 0x80) < 0x40)
-                        {
-                          if ((s[4] ^ 0x80) < 0x40)
-                            {
-                              if (c >= 0xf9 || s[1] >= 0x88)
-#endif
-                                {
-                                  *puc = ((unsigned int) (c & 0x03) << 24)
-                                         | ((unsigned int) (s[1] ^ 0x80) << 18)
-                                         | ((unsigned int) (s[2] ^ 0x80) << 12)
-                                         | ((unsigned int) (s[3] ^ 0x80) << 6)
-                                         | (unsigned int) (s[4] ^ 0x80);
-                                  return 5;
-                                }
-#if CONFIG_UNICODE_SAFETY
-                              /* invalid multibyte character */
-                              *puc = 0xfffd;
-                              return 5;
-                            }
-                          /* invalid multibyte character */
-                          *puc = 0xfffd;
-                          return 4;
-                        }
-                      /* invalid multibyte character */
-                      *puc = 0xfffd;
-                      return 3;
-                    }
-                  /* invalid multibyte character */
-                  return 2;
-                }
-              /* invalid multibyte character */
-#endif
-            }
-          else
-            {
-              /* incomplete multibyte character */
-              *puc = 0xfffd;
-              return n;
-            }
-        }
-      else if (c < 0xfe)
-        {
-          if (n >= 6)
-            {
-#if CONFIG_UNICODE_SAFETY
-              if ((s[1] ^ 0x80) < 0x40)
-                {
-                  if ((s[2] ^ 0x80) < 0x40)
-                    {
-                      if ((s[3] ^ 0x80) < 0x40)
-                        {
-                          if ((s[4] ^ 0x80) < 0x40)
-                            {
-                              if ((s[5] ^ 0x80) < 0x40)
-                                {
-                                  if (c >= 0xfd || s[1] >= 0x84)
-#endif
-                                    {
-                                      *puc = ((unsigned int) (c & 0x01) << 30)
-                                             | ((unsigned int) (s[1] ^ 0x80) << 24)
-                                             | ((unsigned int) (s[2] ^ 0x80) << 18)
-                                             | ((unsigned int) (s[3] ^ 0x80) << 12)
-                                             | ((unsigned int) (s[4] ^ 0x80) << 6)
-                                             | (unsigned int) (s[5] ^ 0x80);
-                                      return 6;
-                                    }
-#if CONFIG_UNICODE_SAFETY
-                                  /* invalid multibyte character */
-                                  *puc = 0xfffd;
-                                  return 6;
-                                }
-                              /* invalid multibyte character */
-                              *puc = 0xfffd;
-                              return 5;
-                            }
-                          /* invalid multibyte character */
-                          *puc = 0xfffd;
-                          return 4;
-                        }
-                      /* invalid multibyte character */
-                      *puc = 0xfffd;
-                      return 3;
-                    }
-                  /* invalid multibyte character */
-                  return 2;
-                }
-              /* invalid multibyte character */
-#endif
-            }
-          else
-            {
-              /* incomplete multibyte character */
-              *puc = 0xfffd;
-              return n;
-            }
-        }
-#endif
     }
   /* invalid multibyte character */
   *puc = 0xfffd;
diff --git a/lib/unistr/u8-mbtouc-unsafe.c b/lib/unistr/u8-mbtouc-unsafe.c
index 01d12dc..679a686 100644
--- a/lib/unistr/u8-mbtouc-unsafe.c
+++ b/lib/unistr/u8-mbtouc-unsafe.c
@@ -1,12 +1,21 @@
 /* Look at first character in UTF-8 string.
-   Copyright (C) 1999-2002, 2006-2007, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999-2002, 2006-2007, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2001.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
@@ -44,17 +53,13 @@ u8_mbtouc_unsafe (ucs4_t *puc, const uint8_t *s, size_t n)
         {
           if (n >= 2)
             {
-#if CONFIG_UNICODE_SAFETY
               if ((s[1] ^ 0x80) < 0x40)
-#endif
                 {
                   *puc = ((unsigned int) (c & 0x1f) << 6)
                          | (unsigned int) (s[1] ^ 0x80);
                   return 2;
                 }
-#if CONFIG_UNICODE_SAFETY
               /* invalid multibyte character */
-#endif
             }
           else
             {
@@ -67,21 +72,18 @@ u8_mbtouc_unsafe (ucs4_t *puc, const uint8_t *s, size_t n)
         {
           if (n >= 3)
             {
-#if CONFIG_UNICODE_SAFETY
               if ((s[1] ^ 0x80) < 0x40)
                 {
                   if ((s[2] ^ 0x80) < 0x40)
                     {
                       if ((c >= 0xe1 || s[1] >= 0xa0)
                           && (c != 0xed || s[1] < 0xa0))
-#endif
                         {
                           *puc = ((unsigned int) (c & 0x0f) << 12)
                                  | ((unsigned int) (s[1] ^ 0x80) << 6)
                                  | (unsigned int) (s[2] ^ 0x80);
                           return 3;
                         }
-#if CONFIG_UNICODE_SAFETY
                       /* invalid multibyte character */
                       *puc = 0xfffd;
                       return 3;
@@ -91,7 +93,6 @@ u8_mbtouc_unsafe (ucs4_t *puc, const uint8_t *s, size_t n)
                   return 2;
                 }
               /* invalid multibyte character */
-#endif
             }
           else
             {
@@ -107,7 +108,6 @@ u8_mbtouc_unsafe (ucs4_t *puc, const uint8_t *s, size_t n)
         {
           if (n >= 4)
             {
-#if CONFIG_UNICODE_SAFETY
               if ((s[1] ^ 0x80) < 0x40)
                 {
                   if ((s[2] ^ 0x80) < 0x40)
@@ -115,11 +115,8 @@ u8_mbtouc_unsafe (ucs4_t *puc, const uint8_t *s, size_t n)
                       if ((s[3] ^ 0x80) < 0x40)
                         {
                           if ((c >= 0xf1 || s[1] >= 0x90)
-#if 1
                               && (c < 0xf4 || (c == 0xf4 && s[1] < 0x90))
-#endif
                              )
-#endif
                             {
                               *puc = ((unsigned int) (c & 0x07) << 18)
                                      | ((unsigned int) (s[1] ^ 0x80) << 12)
@@ -127,7 +124,6 @@ u8_mbtouc_unsafe (ucs4_t *puc, const uint8_t *s, size_t n)
                                      | (unsigned int) (s[3] ^ 0x80);
                               return 4;
                             }
-#if CONFIG_UNICODE_SAFETY
                           /* invalid multibyte character */
                           *puc = 0xfffd;
                           return 4;
@@ -141,7 +137,6 @@ u8_mbtouc_unsafe (ucs4_t *puc, const uint8_t *s, size_t n)
                   return 2;
                 }
               /* invalid multibyte character */
-#endif
             }
           else
             {
@@ -155,113 +150,6 @@ u8_mbtouc_unsafe (ucs4_t *puc, const uint8_t *s, size_t n)
                 return 3;
             }
         }
-#if 0
-      else if (c < 0xfc)
-        {
-          if (n >= 5)
-            {
-#if CONFIG_UNICODE_SAFETY
-              if ((s[1] ^ 0x80) < 0x40)
-                {
-                  if ((s[2] ^ 0x80) < 0x40)
-                    {
-                      if ((s[3] ^ 0x80) < 0x40)
-                        {
-                          if ((s[4] ^ 0x80) < 0x40)
-                            {
-                              if (c >= 0xf9 || s[1] >= 0x88)
-#endif
-                                {
-                                  *puc = ((unsigned int) (c & 0x03) << 24)
-                                         | ((unsigned int) (s[1] ^ 0x80) << 18)
-                                         | ((unsigned int) (s[2] ^ 0x80) << 12)
-                                         | ((unsigned int) (s[3] ^ 0x80) << 6)
-                                         | (unsigned int) (s[4] ^ 0x80);
-                                  return 5;
-                                }
-#if CONFIG_UNICODE_SAFETY
-                              /* invalid multibyte character */
-                              *puc = 0xfffd;
-                              return 5;
-                            }
-                          /* invalid multibyte character */
-                          *puc = 0xfffd;
-                          return 4;
-                        }
-                      /* invalid multibyte character */
-                      *puc = 0xfffd;
-                      return 3;
-                    }
-                  /* invalid multibyte character */
-                  return 2;
-                }
-              /* invalid multibyte character */
-#endif
-            }
-          else
-            {
-              /* incomplete multibyte character */
-              *puc = 0xfffd;
-              return n;
-            }
-        }
-      else if (c < 0xfe)
-        {
-          if (n >= 6)
-            {
-#if CONFIG_UNICODE_SAFETY
-              if ((s[1] ^ 0x80) < 0x40)
-                {
-                  if ((s[2] ^ 0x80) < 0x40)
-                    {
-                      if ((s[3] ^ 0x80) < 0x40)
-                        {
-                          if ((s[4] ^ 0x80) < 0x40)
-                            {
-                              if ((s[5] ^ 0x80) < 0x40)
-                                {
-                                  if (c >= 0xfd || s[1] >= 0x84)
-#endif
-                                    {
-                                      *puc = ((unsigned int) (c & 0x01) << 30)
-                                             | ((unsigned int) (s[1] ^ 0x80) << 24)
-                                             | ((unsigned int) (s[2] ^ 0x80) << 18)
-                                             | ((unsigned int) (s[3] ^ 0x80) << 12)
-                                             | ((unsigned int) (s[4] ^ 0x80) << 6)
-                                             | (unsigned int) (s[5] ^ 0x80);
-                                      return 6;
-                                    }
-#if CONFIG_UNICODE_SAFETY
-                                  /* invalid multibyte character */
-                                  *puc = 0xfffd;
-                                  return 6;
-                                }
-                              /* invalid multibyte character */
-                              *puc = 0xfffd;
-                              return 5;
-                            }
-                          /* invalid multibyte character */
-                          *puc = 0xfffd;
-                          return 4;
-                        }
-                      /* invalid multibyte character */
-                      *puc = 0xfffd;
-                      return 3;
-                    }
-                  /* invalid multibyte character */
-                  return 2;
-                }
-              /* invalid multibyte character */
-#endif
-            }
-          else
-            {
-              /* incomplete multibyte character */
-              *puc = 0xfffd;
-              return n;
-            }
-        }
-#endif
     }
   /* invalid multibyte character */
   *puc = 0xfffd;
diff --git a/lib/unistr/u8-mbtouc.c b/lib/unistr/u8-mbtouc.c
index dc4607f..db9bec3 100644
--- a/lib/unistr/u8-mbtouc.c
+++ b/lib/unistr/u8-mbtouc.c
@@ -1,12 +1,21 @@
 /* Look at first character in UTF-8 string.
-   Copyright (C) 1999-2002, 2006-2007, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999-2002, 2006-2007, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2001.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
@@ -105,10 +114,7 @@ u8_mbtouc (ucs4_t *puc, const uint8_t *s, size_t n)
                       if ((s[3] ^ 0x80) < 0x40)
                         {
                           if ((c >= 0xf1 || s[1] >= 0x90)
-#if 1
-                              && (c < 0xf4 || (c == 0xf4 && s[1] < 0x90))
-#endif
-                             )
+                              && (c < 0xf4 || (c == 0xf4 && s[1] < 0x90)))
                             {
                               *puc = ((unsigned int) (c & 0x07) << 18)
                                      | ((unsigned int) (s[1] ^ 0x80) << 12)
@@ -142,105 +148,6 @@ u8_mbtouc (ucs4_t *puc, const uint8_t *s, size_t n)
                 return 3;
             }
         }
-#if 0
-      else if (c < 0xfc)
-        {
-          if (n >= 5)
-            {
-              if ((s[1] ^ 0x80) < 0x40)
-                {
-                  if ((s[2] ^ 0x80) < 0x40)
-                    {
-                      if ((s[3] ^ 0x80) < 0x40)
-                        {
-                          if ((s[4] ^ 0x80) < 0x40)
-                            {
-                              if (c >= 0xf9 || s[1] >= 0x88)
-                                {
-                                  *puc = ((unsigned int) (c & 0x03) << 24)
-                                         | ((unsigned int) (s[1] ^ 0x80) << 18)
-                                         | ((unsigned int) (s[2] ^ 0x80) << 12)
-                                         | ((unsigned int) (s[3] ^ 0x80) << 6)
-                                         | (unsigned int) (s[4] ^ 0x80);
-                                  return 5;
-                                }
-                              /* invalid multibyte character */
-                              *puc = 0xfffd;
-                              return 5;
-                            }
-                          /* invalid multibyte character */
-                          *puc = 0xfffd;
-                          return 4;
-                        }
-                      /* invalid multibyte character */
-                      *puc = 0xfffd;
-                      return 3;
-                    }
-                  /* invalid multibyte character */
-                  return 2;
-                }
-              /* invalid multibyte character */
-            }
-          else
-            {
-              /* incomplete multibyte character */
-              *puc = 0xfffd;
-              return n;
-            }
-        }
-      else if (c < 0xfe)
-        {
-          if (n >= 6)
-            {
-              if ((s[1] ^ 0x80) < 0x40)
-                {
-                  if ((s[2] ^ 0x80) < 0x40)
-                    {
-                      if ((s[3] ^ 0x80) < 0x40)
-                        {
-                          if ((s[4] ^ 0x80) < 0x40)
-                            {
-                              if ((s[5] ^ 0x80) < 0x40)
-                                {
-                                  if (c >= 0xfd || s[1] >= 0x84)
-                                    {
-                                      *puc = ((unsigned int) (c & 0x01) << 30)
-                                             | ((unsigned int) (s[1] ^ 0x80) << 24)
-                                             | ((unsigned int) (s[2] ^ 0x80) << 18)
-                                             | ((unsigned int) (s[3] ^ 0x80) << 12)
-                                             | ((unsigned int) (s[4] ^ 0x80) << 6)
-                                             | (unsigned int) (s[5] ^ 0x80);
-                                      return 6;
-                                    }
-                                  /* invalid multibyte character */
-                                  *puc = 0xfffd;
-                                  return 6;
-                                }
-                              /* invalid multibyte character */
-                              *puc = 0xfffd;
-                              return 5;
-                            }
-                          /* invalid multibyte character */
-                          *puc = 0xfffd;
-                          return 4;
-                        }
-                      /* invalid multibyte character */
-                      *puc = 0xfffd;
-                      return 3;
-                    }
-                  /* invalid multibyte character */
-                  return 2;
-                }
-              /* invalid multibyte character */
-            }
-          else
-            {
-              /* incomplete multibyte character */
-              *puc = 0xfffd;
-              return n;
-            }
-        }
-#endif
     }
   /* invalid multibyte character */
   *puc = 0xfffd;
diff --git a/lib/unistr/u8-mbtoucr.c b/lib/unistr/u8-mbtoucr.c
index 3d8c05f..45785c0 100644
--- a/lib/unistr/u8-mbtoucr.c
+++ b/lib/unistr/u8-mbtoucr.c
@@ -1,12 +1,21 @@
 /* Look at first character in UTF-8 string, returning an error code.
-   Copyright (C) 1999-2002, 2006-2007, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999-2002, 2006-2007, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2001.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
@@ -92,10 +101,7 @@ u8_mbtoucr (ucs4_t *puc, const uint8_t *s, size_t n)
             {
               if ((s[1] ^ 0x80) < 0x40
                   && (c >= 0xf1 || s[1] >= 0x90)
-#if 1
-                  && (c < 0xf4 || (c == 0xf4 && s[1] < 0x90))
-#endif
-                 )
+                  && (c < 0xf4 || (c == 0xf4 && s[1] < 0x90)))
                 {
                   if (n >= 3)
                     {
@@ -138,146 +144,6 @@ u8_mbtoucr (ucs4_t *puc, const uint8_t *s, size_t n)
               return -2;
             }
         }
-#if 0
-      else if (c < 0xfc)
-        {
-          if (n >= 2)
-            {
-              if ((s[1] ^ 0x80) < 0x40
-                  && (c >= 0xf9 || s[1] >= 0x88))
-                {
-                  if (n >= 3)
-                    {
-                      if ((s[2] ^ 0x80) < 0x40)
-                        {
-                          if (n >= 4)
-                            {
-                              if ((s[3] ^ 0x80) < 0x40)
-                                {
-                                  if (n >= 5)
-                                    {
-                                      if ((s[4] ^ 0x80) < 0x40)
-                                        {
-                                          *puc = ((unsigned int) (c & 0x03) << 24)
-                                                 | ((unsigned int) (s[1] ^ 0x80) << 18)
-                                                 | ((unsigned int) (s[2] ^ 0x80) << 12)
-                                                 | ((unsigned int) (s[3] ^ 0x80) << 6)
-                                                 | (unsigned int) (s[4] ^ 0x80);
-                                          return 5;
-                                        }
-                                      /* invalid multibyte character */
-                                    }
-                                  else
-                                    {
-                                      /* incomplete multibyte character */
-                                      *puc = 0xfffd;
-                                      return -2;
-                                    }
-                                }
-                              /* invalid multibyte character */
-                            }
-                          else
-                            {
-                              /* incomplete multibyte character */
-                              *puc = 0xfffd;
-                              return -2;
-                            }
-                        }
-                      /* invalid multibyte character */
-                    }
-                  else
-                    {
-                      /* incomplete multibyte character */
-                      *puc = 0xfffd;
-                      return -2;
-                    }
-                }
-              /* invalid multibyte character */
-            }
-          else
-            {
-              /* incomplete multibyte character */
-              *puc = 0xfffd;
-              return -2;
-            }
-        }
-      else if (c < 0xfe)
-        {
-          if (n >= 2)
-            {
-              if ((s[1] ^ 0x80) < 0x40
-                  && (c >= 0xfd || s[1] >= 0x84))
-                {
-                  if (n >= 3)
-                    {
-                      if ((s[2] ^ 0x80) < 0x40)
-                        {
-                          if (n >= 4)
-                            {
-                              if ((s[3] ^ 0x80) < 0x40)
-                                {
-                                  if (n >= 5)
-                                    {
-                                      if ((s[4] ^ 0x80) < 0x40)
-                                        {
-                                          if (n >= 6)
-                                            {
-                                              if ((s[5] ^ 0x80) < 0x40)
-                                                {
-                                                  *puc = ((unsigned int) (c & 0x01) << 30)
-                                                         | ((unsigned int) (s[1] ^ 0x80) << 24)
-                                                         | ((unsigned int) (s[2] ^ 0x80) << 18)
-                                                         | ((unsigned int) (s[3] ^ 0x80) << 12)
-                                                         | ((unsigned int) (s[4] ^ 0x80) << 6)
-                                                         | (unsigned int) (s[5] ^ 0x80);
-                                                  return 6;
-                                                }
-                                              /* invalid multibyte character */
-                                            }
-                                          else
-                                            {
-                                              /* incomplete multibyte character */
-                                              *puc = 0xfffd;
-                                              return -2;
-                                            }
-                                        }
-                                      /* invalid multibyte character */
-                                    }
-                                  else
-                                    {
-                                      /* incomplete multibyte character */
-                                      *puc = 0xfffd;
-                                      return -2;
-                                    }
-                                }
-                              /* invalid multibyte character */
-                            }
-                          else
-                            {
-                              /* incomplete multibyte character */
-                              *puc = 0xfffd;
-                              return -2;
-                            }
-                        }
-                      /* invalid multibyte character */
-                    }
-                  else
-                    {
-                      /* incomplete multibyte character */
-                      *puc = 0xfffd;
-                      return -2;
-                    }
-                }
-              /* invalid multibyte character */
-            }
-          else
-            {
-              /* incomplete multibyte character */
-              *puc = 0xfffd;
-              return -2;
-            }
-        }
-#endif
     }
   /* invalid multibyte character */
   *puc = 0xfffd;
diff --git a/lib/unistr/u8-move.c b/lib/unistr/u8-move.c
index 5c872ca..2919068 100644
--- a/lib/unistr/u8-move.c
+++ b/lib/unistr/u8-move.c
@@ -1,12 +1,21 @@
 /* Copy piece of UTF-8 string.
-   Copyright (C) 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u8-next.c b/lib/unistr/u8-next.c
index 8c218a2..9839cc9 100644
--- a/lib/unistr/u8-next.c
+++ b/lib/unistr/u8-next.c
@@ -1,12 +1,21 @@
 /* Iterate over next character in UTF-8 string.
-   Copyright (C) 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u8-prev.c b/lib/unistr/u8-prev.c
index e01551e..bdd7fb9 100644
--- a/lib/unistr/u8-prev.c
+++ b/lib/unistr/u8-prev.c
@@ -1,12 +1,21 @@
 /* Iterate over previous character in UTF-8 string.
-   Copyright (C) 2002, 2006-2007, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
@@ -33,9 +42,7 @@ u8_prev (ucs4_t *puc, const uint8_t *s, const uint8_t *start)
           *puc = c_1;
           return s - 1;
         }
-#if CONFIG_UNICODE_SAFETY
       if ((c_1 ^ 0x80) < 0x40)
-#endif
         if (s - 1 != start)
           {
             uint8_t c_2 = s[-2];
@@ -46,38 +53,28 @@ u8_prev (ucs4_t *puc, const uint8_t *s, const uint8_t *start)
                        | (unsigned int) (c_1 ^ 0x80);
                 return s - 2;
               }
-#if CONFIG_UNICODE_SAFETY
             if ((c_2 ^ 0x80) < 0x40)
-#endif
               if (s - 2 != start)
                 {
                   uint8_t c_3 = s[-3];
 
                   if (c_3 >= 0xe0 && c_3 < 0xf0
-#if CONFIG_UNICODE_SAFETY
                       && (c_3 >= 0xe1 || c_2 >= 0xa0)
-                      && (c_3 != 0xed || c_2 < 0xa0)
-#endif
-                     )
+                      && (c_3 != 0xed || c_2 < 0xa0))
                     {
                       *puc = ((unsigned int) (c_3 & 0x0f) << 12)
                              | ((unsigned int) (c_2 ^ 0x80) << 6)
                              | (unsigned int) (c_1 ^ 0x80);
                       return s - 3;
                     }
-#if CONFIG_UNICODE_SAFETY
                   if ((c_3 ^ 0x80) < 0x40)
-#endif
                     if (s - 3 != start)
                       {
                         uint8_t c_4 = s[-4];
 
                         if (c_4 >= 0xf0 && c_4 < 0xf8
-#if CONFIG_UNICODE_SAFETY
                             && (c_4 >= 0xf1 || c_3 >= 0x90)
-                            && (c_4 < 0xf4 || (c_4 == 0xf4 && c_3 < 0x90))
-#endif
-                           )
+                            && (c_4 < 0xf4 || (c_4 == 0xf4 && c_3 < 0x90)))
                           {
                             *puc = ((unsigned int) (c_4 & 0x07) << 18)
                                    | ((unsigned int) (c_3 ^ 0x80) << 12)
diff --git a/lib/unistr/u8-set.c b/lib/unistr/u8-set.c
index 5f9e5e6..9bc2c16 100644
--- a/lib/unistr/u8-set.c
+++ b/lib/unistr/u8-set.c
@@ -1,12 +1,21 @@
 /* Fill UTF-8 string.
-   Copyright (C) 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u8-startswith.c b/lib/unistr/u8-startswith.c
index b22fed4..342acf7 100644
--- a/lib/unistr/u8-startswith.c
+++ b/lib/unistr/u8-startswith.c
@@ -1,12 +1,21 @@
 /* Substring test for UTF-8 strings.
-   Copyright (C) 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u8-stpcpy.c b/lib/unistr/u8-stpcpy.c
index 8fb3ca5..2079fab 100644
--- a/lib/unistr/u8-stpcpy.c
+++ b/lib/unistr/u8-stpcpy.c
@@ -1,12 +1,21 @@
 /* Copy UTF-8 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u8-stpncpy.c b/lib/unistr/u8-stpncpy.c
index 62d4972..b1b4fae 100644
--- a/lib/unistr/u8-stpncpy.c
+++ b/lib/unistr/u8-stpncpy.c
@@ -1,12 +1,21 @@
 /* Copy UTF-8 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u8-strcat.c b/lib/unistr/u8-strcat.c
index b689201..33886f5 100644
--- a/lib/unistr/u8-strcat.c
+++ b/lib/unistr/u8-strcat.c
@@ -1,12 +1,21 @@
 /* Concatenate UTF-8 strings.
-   Copyright (C) 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u8-strchr.c b/lib/unistr/u8-strchr.c
index dd1cb84..82718f1 100644
--- a/lib/unistr/u8-strchr.c
+++ b/lib/unistr/u8-strchr.c
@@ -1,13 +1,22 @@
 /* Search character in UTF-8 string.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2015 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2016 Free Software Foundation,
    Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u8-strcmp.c b/lib/unistr/u8-strcmp.c
index 93f06ad..eab054a 100644
--- a/lib/unistr/u8-strcmp.c
+++ b/lib/unistr/u8-strcmp.c
@@ -1,12 +1,21 @@
 /* Compare UTF-8 strings.
-   Copyright (C) 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u8-strcoll.c b/lib/unistr/u8-strcoll.c
index 8a2a307..9024e2c 100644
--- a/lib/unistr/u8-strcoll.c
+++ b/lib/unistr/u8-strcoll.c
@@ -1,12 +1,21 @@
 /* Compare UTF-8 strings using the collation rules of the current locale.
-   Copyright (C) 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u8-strcpy.c b/lib/unistr/u8-strcpy.c
index 40d544e..149aa08 100644
--- a/lib/unistr/u8-strcpy.c
+++ b/lib/unistr/u8-strcpy.c
@@ -1,12 +1,21 @@
 /* Copy UTF-8 string.
-   Copyright (C) 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u8-strcspn.c b/lib/unistr/u8-strcspn.c
index 357f480..a053613 100644
--- a/lib/unistr/u8-strcspn.c
+++ b/lib/unistr/u8-strcspn.c
@@ -1,12 +1,21 @@
 /* Search for some characters in UTF-8 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u8-strdup.c b/lib/unistr/u8-strdup.c
index 1ac590f..ec9141a 100644
--- a/lib/unistr/u8-strdup.c
+++ b/lib/unistr/u8-strdup.c
@@ -1,12 +1,21 @@
 /* Copy UTF-8 string.
-   Copyright (C) 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u8-strlen.c b/lib/unistr/u8-strlen.c
index 08f011e..36aef7d 100644
--- a/lib/unistr/u8-strlen.c
+++ b/lib/unistr/u8-strlen.c
@@ -1,12 +1,21 @@
 /* Determine length of UTF-8 string.
-   Copyright (C) 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u8-strmblen.c b/lib/unistr/u8-strmblen.c
index 09b876b..7941232 100644
--- a/lib/unistr/u8-strmblen.c
+++ b/lib/unistr/u8-strmblen.c
@@ -1,13 +1,22 @@
 /* Look at first character in UTF-8 string.
-   Copyright (C) 1999-2000, 2002, 2006-2007, 2009-2015 Free Software
+   Copyright (C) 1999-2000, 2002, 2006-2007, 2009-2016 Free Software
    Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
@@ -33,64 +42,24 @@ u8_strmblen (const uint8_t *s)
     {
       if (c < 0xe0)
         {
-#if CONFIG_UNICODE_SAFETY
           if ((s[1] ^ 0x80) < 0x40)
-#else
-          if (s[1] != 0)
-#endif
             return 2;
         }
       else if (c < 0xf0)
         {
-#if CONFIG_UNICODE_SAFETY
           if ((s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
               && (c >= 0xe1 || s[1] >= 0xa0)
               && (c != 0xed || s[1] < 0xa0))
-#else
-          if (s[1] != 0 && s[2] != 0)
-#endif
             return 3;
         }
       else if (c < 0xf8)
         {
-#if CONFIG_UNICODE_SAFETY
           if ((s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
               && (s[3] ^ 0x80) < 0x40
               && (c >= 0xf1 || s[1] >= 0x90)
-#if 1
-              && (c < 0xf4 || (c == 0xf4 && s[1] < 0x90))
-#endif
-             )
-#else
-          if (s[1] != 0 && s[2] != 0 && s[3] != 0)
-#endif
+              && (c < 0xf4 || (c == 0xf4 && s[1] < 0x90)))
             return 4;
         }
-#if 0
-      else if (c < 0xfc)
-        {
-#if CONFIG_UNICODE_SAFETY
-          if ((s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
-              && (s[3] ^ 0x80) < 0x40 && (s[4] ^ 0x80) < 0x40
-              && (c >= 0xf9 || s[1] >= 0x88))
-#else
-          if (s[1] != 0 && s[2] != 0 && s[3] != 0 && s[4] != 0)
-#endif
-            return 5;
-        }
-      else if (c < 0xfe)
-        {
-#if CONFIG_UNICODE_SAFETY
-          if ((s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
-              && (s[3] ^ 0x80) < 0x40 && (s[4] ^ 0x80) < 0x40
-              && (s[5] ^ 0x80) < 0x40
-              && (c >= 0xfd || s[1] >= 0x84))
-#else
-          if (s[1] != 0 && s[2] != 0 && s[3] != 0 && s[4] != 0 && s[5] != 0)
-#endif
-            return 6;
-        }
-#endif
     }
   /* invalid or incomplete multibyte character */
   return -1;
diff --git a/lib/unistr/u8-strmbtouc.c b/lib/unistr/u8-strmbtouc.c
index abfb179..da70d71 100644
--- a/lib/unistr/u8-strmbtouc.c
+++ b/lib/unistr/u8-strmbtouc.c
@@ -1,13 +1,22 @@
 /* Look at first character in UTF-8 string.
-   Copyright (C) 1999-2000, 2002, 2006-2007, 2009-2015 Free Software
+   Copyright (C) 1999-2000, 2002, 2006-2007, 2009-2016 Free Software
    Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
@@ -36,11 +45,7 @@ u8_strmbtouc (ucs4_t *puc, const uint8_t *s)
     {
       if (c < 0xe0)
         {
-#if CONFIG_UNICODE_SAFETY
           if ((s[1] ^ 0x80) < 0x40)
-#else
-          if (s[1] != 0)
-#endif
             {
               *puc = ((unsigned int) (c & 0x1f) << 6)
                      | (unsigned int) (s[1] ^ 0x80);
@@ -49,13 +54,9 @@ u8_strmbtouc (ucs4_t *puc, const uint8_t *s)
         }
       else if (c < 0xf0)
         {
-#if CONFIG_UNICODE_SAFETY
           if ((s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
               && (c >= 0xe1 || s[1] >= 0xa0)
               && (c != 0xed || s[1] < 0xa0))
-#else
-          if (s[1] != 0 && s[2] != 0)
-#endif
             {
               *puc = ((unsigned int) (c & 0x0f) << 12)
                      | ((unsigned int) (s[1] ^ 0x80) << 6)
@@ -65,17 +66,10 @@ u8_strmbtouc (ucs4_t *puc, const uint8_t *s)
         }
       else if (c < 0xf8)
         {
-#if CONFIG_UNICODE_SAFETY
           if ((s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
               && (s[3] ^ 0x80) < 0x40
               && (c >= 0xf1 || s[1] >= 0x90)
-#if 1
-              && (c < 0xf4 || (c == 0xf4 && s[1] < 0x90))
-#endif
-             )
-#else
-          if (s[1] != 0 && s[2] != 0 && s[3] != 0)
-#endif
+              && (c < 0xf4 || (c == 0xf4 && s[1] < 0x90)))
             {
               *puc = ((unsigned int) (c & 0x07) << 18)
                      | ((unsigned int) (s[1] ^ 0x80) << 12)
@@ -84,46 +78,6 @@ u8_strmbtouc (ucs4_t *puc, const uint8_t *s)
               return 4;
             }
         }
-#if 0
-      else if (c < 0xfc)
-        {
-#if CONFIG_UNICODE_SAFETY
-          if ((s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
-              && (s[3] ^ 0x80) < 0x40 && (s[4] ^ 0x80) < 0x40
-              && (c >= 0xf9 || s[1] >= 0x88))
-#else
-          if (s[1] != 0 && s[2] != 0 && s[3] != 0 && s[4] != 0)
-#endif
-            {
-              *puc = ((unsigned int) (c & 0x03) << 24)
-                     | ((unsigned int) (s[1] ^ 0x80) << 18)
-                     | ((unsigned int) (s[2] ^ 0x80) << 12)
-                     | ((unsigned int) (s[3] ^ 0x80) << 6)
-                     | (unsigned int) (s[4] ^ 0x80);
-              return 5;
-            }
-        }
-      else if (c < 0xfe)
-        {
-#if CONFIG_UNICODE_SAFETY
-          if ((s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
-              && (s[3] ^ 0x80) < 0x40 && (s[4] ^ 0x80) < 0x40
-              && (s[5] ^ 0x80) < 0x40
-              && (c >= 0xfd || s[1] >= 0x84))
-#else
-          if (s[1] != 0 && s[2] != 0 && s[3] != 0 && s[4] != 0 && s[5] != 0)
-#endif
-            {
-              *puc = ((unsigned int) (c & 0x01) << 30)
-                     | ((unsigned int) (s[1] ^ 0x80) << 24)
-                     | ((unsigned int) (s[2] ^ 0x80) << 18)
-                     | ((unsigned int) (s[3] ^ 0x80) << 12)
-                     | ((unsigned int) (s[4] ^ 0x80) << 6)
-                     | (unsigned int) (s[5] ^ 0x80);
-              return 6;
-            }
-        }
-#endif
     }
   /* invalid or incomplete multibyte character */
   return -1;
diff --git a/lib/unistr/u8-strncat.c b/lib/unistr/u8-strncat.c
index 533355b..bbc7874 100644
--- a/lib/unistr/u8-strncat.c
+++ b/lib/unistr/u8-strncat.c
@@ -1,12 +1,21 @@
 /* Concatenate UTF-8 strings.
-   Copyright (C) 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u8-strncmp.c b/lib/unistr/u8-strncmp.c
index 1b0d0f4..391eb51 100644
--- a/lib/unistr/u8-strncmp.c
+++ b/lib/unistr/u8-strncmp.c
@@ -1,12 +1,21 @@
 /* Compare UTF-8 strings.
-   Copyright (C) 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u8-strncpy.c b/lib/unistr/u8-strncpy.c
index 306b02f..e774b52 100644
--- a/lib/unistr/u8-strncpy.c
+++ b/lib/unistr/u8-strncpy.c
@@ -1,12 +1,21 @@
 /* Copy UTF-8 string.
-   Copyright (C) 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u8-strnlen.c b/lib/unistr/u8-strnlen.c
index 5ae8b71..b176c0e 100644
--- a/lib/unistr/u8-strnlen.c
+++ b/lib/unistr/u8-strnlen.c
@@ -1,12 +1,21 @@
 /* Determine bounded length of UTF-8 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u8-strpbrk.c b/lib/unistr/u8-strpbrk.c
index e7a8ad2..69d19ec 100644
--- a/lib/unistr/u8-strpbrk.c
+++ b/lib/unistr/u8-strpbrk.c
@@ -1,12 +1,21 @@
 /* Search for some characters in UTF-8 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u8-strrchr.c b/lib/unistr/u8-strrchr.c
index 4efd42d..be07f9b 100644
--- a/lib/unistr/u8-strrchr.c
+++ b/lib/unistr/u8-strrchr.c
@@ -1,13 +1,22 @@
 /* Search character in UTF-8 string.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2015 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2016 Free Software Foundation,
    Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u8-strspn.c b/lib/unistr/u8-strspn.c
index 23ab7b4..07ac00c 100644
--- a/lib/unistr/u8-strspn.c
+++ b/lib/unistr/u8-strspn.c
@@ -1,12 +1,21 @@
 /* Search for some characters in UTF-8 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u8-strstr.c b/lib/unistr/u8-strstr.c
index 59d35e7..8fd1a74 100644
--- a/lib/unistr/u8-strstr.c
+++ b/lib/unistr/u8-strstr.c
@@ -1,12 +1,21 @@
 /* Substring test for UTF-8 strings.
-   Copyright (C) 1999, 2002, 2006, 2010-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2010-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u8-strtok.c b/lib/unistr/u8-strtok.c
index 1e4e6ef..976e2c3 100644
--- a/lib/unistr/u8-strtok.c
+++ b/lib/unistr/u8-strtok.c
@@ -1,12 +1,21 @@
 /* Tokenize UTF-8 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u8-to-u16.c b/lib/unistr/u8-to-u16.c
index cb0f298..e27b5d5 100644
--- a/lib/unistr/u8-to-u16.c
+++ b/lib/unistr/u8-to-u16.c
@@ -1,12 +1,21 @@
 /* Convert UTF-8 string to UTF-16 string.
-   Copyright (C) 2002, 2006-2007, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u8-to-u32.c b/lib/unistr/u8-to-u32.c
index 1b3cbc4..8d2b1ef 100644
--- a/lib/unistr/u8-to-u32.c
+++ b/lib/unistr/u8-to-u32.c
@@ -1,12 +1,21 @@
 /* Convert UTF-8 string to UTF-32 string.
-   Copyright (C) 2002, 2006-2007, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
diff --git a/lib/unistr/u8-uctomb-aux.c b/lib/unistr/u8-uctomb-aux.c
index cc9c544..14326e5 100644
--- a/lib/unistr/u8-uctomb-aux.c
+++ b/lib/unistr/u8-uctomb-aux.c
@@ -1,12 +1,21 @@
 /* Conversion UCS-4 to UTF-8.
-   Copyright (C) 2002, 2006-2007, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
@@ -37,17 +46,8 @@ u8_uctomb_aux (uint8_t *s, ucs4_t uc, int n)
       else
         return -1;
     }
-#if 0
-  else if (uc < 0x200000)
-    count = 4;
-  else if (uc < 0x4000000)
-    count = 5;
-  else if (uc <= 0x7fffffff)
-    count = 6;
-#else
   else if (uc < 0x110000)
     count = 4;
-#endif
   else
     return -1;
 
@@ -56,12 +56,10 @@ u8_uctomb_aux (uint8_t *s, ucs4_t uc, int n)
 
   switch (count) /* note: code falls through cases! */
     {
-#if 0
-    case 6: s[5] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0x4000000;
-    case 5: s[4] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0x200000;
-#endif
     case 4: s[3] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0x10000;
+      /* fallthrough */
     case 3: s[2] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0x800;
+      /* fallthrough */
     case 2: s[1] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0xc0;
   /*case 1:*/ s[0] = uc;
     }
diff --git a/lib/unistr/u8-uctomb.c b/lib/unistr/u8-uctomb.c
index 43ef23d..26857a5 100644
--- a/lib/unistr/u8-uctomb.c
+++ b/lib/unistr/u8-uctomb.c
@@ -1,12 +1,21 @@
 /* Store a character in UTF-8 string.
-   Copyright (C) 2002, 2005-2006, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2005-2006, 2009-2016 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU Lesser General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software: you can redistribute it and/or
+   modify it under the terms of either:
 
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
@@ -52,17 +61,8 @@ u8_uctomb (uint8_t *s, ucs4_t uc, int n)
           else
             return -1;
         }
-#if 0
-      else if (uc < 0x200000)
-        count = 4;
-      else if (uc < 0x4000000)
-        count = 5;
-      else if (uc <= 0x7fffffff)
-        count = 6;
-#else
       else if (uc < 0x110000)
         count = 4;
-#endif
       else
         return -1;
 
@@ -70,10 +70,6 @@ u8_uctomb (uint8_t *s, ucs4_t uc, int n)
         {
           switch (count) /* note: code falls through cases! */
             {
-#if 0
-            case 6: s[5] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0x4000000;
-            case 5: s[4] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0x200000;
-#endif
             case 4: s[3] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0x10000;
             case 3: s[2] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0x800;
             case 2: s[1] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0xc0;