Switch license to GPLv3 or later.

diff --git a/lisp/calc/README.prev b/lisp/calc/README.prev
index 3dfcfc7fac7af882b7dab15361f9cb6805666049..a805b9a1a9a30c1ba8c18eb5702b4dec86cc8fa9 100644 (file)
--- a/lisp/calc/README.prev
+++ b/lisp/calc/README.prev
@@ -987,7 +987,7 @@ This file is part of GNU Emacs.
 
 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,