gnulib-local: Put real license notice into the source files.

Author: bhaible

ChangeLog

@@ -1,3 +1,8 @@
+2021-06-06  Bruno Haible  <bruno@clisp.org>
+
+	gnulib-local: Put real license notice into the source files.
+	* gnulib-local/lib/alloca.in.h: Use an LGPLv2+ notice.
+
 2021-02-28  Bruno Haible  <bruno@clisp.org>
 
 	Update DEPENDENCIES.

gnulib-local/lib/alloca.in.h

@@ -1,17 +1,17 @@
 /* Memory allocation on the stack.
    Copyright (C) 1995, 1999, 2001-2007 Free Software Foundation, Inc.
 
-   This program is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   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 program is distributed in the hope that it will be useful,
+   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 General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   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/>.  */
 
 /* When this file is included, it may be preceded only by preprocessor