Updated copyright notices and other doc fixes.

scripts/mkdiff

@@ -1,4 +1,13 @@
 #!/bin/sh
+# Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+#
+# This file is free software; as a special exception the author gives
+# unlimited permission to copy and/or distribute it, with or without
+# modifications, as long as this notice is preserved.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY, to the extent permitted by law; without even the
+# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 
 if [ $# != 1 ] ; then
     echo "usage: mkdiff package-name" >&2