*: 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>

miscutils/makedevs.c

@@ -76,7 +76,7 @@ int makedevs_main(int argc, char **argv)
 
 #elif ENABLE_FEATURE_MAKEDEVS_TABLE
 
-/* Licensed under the GPL v2 or later, see the file LICENSE in this tarball. */
+/* Licensed under GPLv2 or later, see file LICENSE in this source tree. */
 
 int makedevs_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int makedevs_main(int argc UNUSED_PARAM, char **argv)