*: make GNU licensing statement forms more regular

This change retains "or later" state! No licensing _changes_ here,
only form is adjusted (article, space between "GPL" and "v2" and so on).

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/e2fsprogs/old_e2fsprogs/tune2fs.c b/e2fsprogs/old_e2fsprogs/tune2fs.c
index 00f8682..3c3f4af 100644
--- a/e2fsprogs/old_e2fsprogs/tune2fs.c
+++ b/e2fsprogs/old_e2fsprogs/tune2fs.c
@@ -8,7 +8,7 @@
  *
  * Copyright 1995, 1996, 1997, 1998, 1999, 2000 by Theodore Ts'o.
  *
- * Licensed under GPLv2, see file LICENSE in this tarball for details.
+ * Licensed under GPLv2, see file LICENSE in this source tree.
  */
 
 /*