gpl -> lgpl

include/obstack.h

@@ -2,16 +2,16 @@
    Copyright (C) 1988, 1992 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
+under the terms of the GNU Library General Public License as published by the
 Free Software Foundation; either version 2, or (at your option) any
 later version.
 
 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 General Public License for more details.
+GNU Library 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 Library General Public License
 along with this program; if not, write to the Free Software
 Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */