c32to*: Relax license.

* modules/c32tolower (License): Change to LGPLv2+.
* modules/c32toupper (License): Likewise.
* lib/c32tolower.c: Update license notice.
* lib/c32toupper.c: Likewise.
* lib/c32to-impl.h: Likewise.

3 files changed, 24 insertions, 48 deletions

diff --git a/lib/c32to-impl.h b/lib/c32to-impl.h
index 724691a116..923825589b 100644
--- a/lib/c32to-impl.h
+++ b/lib/c32to-impl.h
@@ -1,26 +1,18 @@
 /* Case mapping of a 32-bit wide character.
    Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
-   This file is free software.
-   It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
-   You can redistribute it and/or modify it under either
-     - the terms of the GNU Lesser General Public License as published
-       by the Free Software Foundation, either version 3, or (at your
-       option) any later version, or
-     - the terms of the GNU General Public License as published by the
-       Free Software Foundation; either version 2, or (at your option)
-       any later version, or
-     - the same dual license "the GNU LGPLv3+ or the GNU GPLv2+".
+   This file 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 2.1 of the
+   License, or (at your option) any later version.
 
    This file 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
-   Lesser General Public License and the GNU General Public License
-   for more details.
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU Lesser General Public
-   License and of the GNU General Public License along with this
-   program.  If not, see <https://www.gnu.org/licenses/>.  */
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 /* Written by Bruno Haible <bruno@clisp.org>, 2023.  */
 
diff --git a/lib/c32tolower.c b/lib/c32tolower.c
index 447016214e..8934f6fe68 100644
--- a/lib/c32tolower.c
+++ b/lib/c32tolower.c
@@ -1,26 +1,18 @@
 /* Map a 32-bit wide character to lowercase.
    Copyright (C) 2023 Free Software Foundation, Inc.
 
-   This file is free software.
-   It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
-   You can redistribute it and/or modify it under either
-     - the terms of the GNU Lesser General Public License as published
-       by the Free Software Foundation, either version 3, or (at your
-       option) any later version, or
-     - the terms of the GNU General Public License as published by the
-       Free Software Foundation; either version 2, or (at your option)
-       any later version, or
-     - the same dual license "the GNU LGPLv3+ or the GNU GPLv2+".
+   This file 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 2.1 of the
+   License, or (at your option) any later version.
 
    This file 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
-   Lesser General Public License and the GNU General Public License
-   for more details.
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU Lesser General Public
-   License and of the GNU General Public License along with this
-   program.  If not, see <https://www.gnu.org/licenses/>.  */
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #include <config.h>
 
diff --git a/lib/c32toupper.c b/lib/c32toupper.c
index a3ca5ecf19..3fbe5d2ad2 100644
--- a/lib/c32toupper.c
+++ b/lib/c32toupper.c
@@ -1,26 +1,18 @@
 /* Map a 32-bit wide character to uppercase.
    Copyright (C) 2023 Free Software Foundation, Inc.
 
-   This file is free software.
-   It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
-   You can redistribute it and/or modify it under either
-     - the terms of the GNU Lesser General Public License as published
-       by the Free Software Foundation, either version 3, or (at your
-       option) any later version, or
-     - the terms of the GNU General Public License as published by the
-       Free Software Foundation; either version 2, or (at your option)
-       any later version, or
-     - the same dual license "the GNU LGPLv3+ or the GNU GPLv2+".
+   This file 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 2.1 of the
+   License, or (at your option) any later version.
 
    This file 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
-   Lesser General Public License and the GNU General Public License
-   for more details.
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU Lesser General Public
-   License and of the GNU General Public License along with this
-   program.  If not, see <https://www.gnu.org/licenses/>.  */
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #include <config.h>