Switch license to GPLv3 or later.

diff --git a/lispref/tindex.pl b/lispref/tindex.pl
index 73143ffa596141607cf18c62520460e7ea55a40b..89bbe5f5f6f04d09be380a2ecbe63bab14293729 100755 (executable)
--- a/lispref/tindex.pl
+++ b/lispref/tindex.pl
@@ -7,7 +7,7 @@
 #
 # GNU Emacs 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 2, or (at your option)
+# the Free Software Foundation; either version 3, or (at your option)
 # any later version.
 #
 # GNU Emacs is distributed in the hope that it will be useful,