mega-package rather than sumo tarball

I was thinking that when 21.0 is released, it might be better to have a mega-package (union of all common binary packages) rather than a sumo tarball. This would accomplish the same things as sumo tarball (helping those admins on large multi-user systems) while making it clear that there is a package system working in the background. Also, updates to core XEmacs and mega-package could be made separately. It might make sense to update the mega-package once a month, regardless of new XEmacs release. It might even be possible to write a script that combines the list of common packages into a mega-package on the first of every month. Just a thought. -- Richard Coleman coleman(a)math.gatech.edu