windows installer script and files

The text of this file gives the terms of the GPLv2.0 but I thought we'd finally got everything straight so that the terms are GPLv2.0 OR LATER, so just including the text for that licence does not in itself include the "or later" bit... IMHO {Same issue applies to the "COPYING" file actually, it gives the GPL2.0 text which is right and proper, but it fails to say what the files' headers say of "this is what we are licensing it under but you can use a later version which is not included herein"}.