Compressing the Lisp and Info files in the MS-Windows installation

["Stephen J. Turnbull" <stephen@xemacs.org>]

Eli Zaretskii writes:

 > If the 'gzip' program is available, the Posix installation procedure
 > ("make install") by default compresses [stuff].  Are there any
 > reasons not to do the same when Emacs is installed on MS-Windows?

Wouldn't the sensible thing to do on Windows be to use zip, which in
some form seems to always be available?  While it doesn't directly
address Drew's gripe that it's a PITA for the user who wants to grep, it
does make it easier to undo the operation since there's only one zipfile
for the elisp and one for the info.

Many programs will now treat a zipfile as a filesystem mounted at the
zipfile's path, as well.  Dunno if grep or Emacs can do that, but
apparently it's a pretty standard thing (especially on Windows, where
Explorer has treated a zipfile as a directory rather than an archive
since Windows XP I think).