Make generated Debian packages slightly easier to upload.
* debian/changelog: Generate 3.01.arch.195-1.
* debian/rules (clean): Call $(MAKE) realclean instead of $(MAKE) clean.
* Makefile.defs (LASTUPLOAD): New variable that indicates the version
that was last uploaded to Debian.
* Makefile (debrelease): Use $(LASTUPLOAD) to ensure that a full set of
changes is generated. This means we have to use dpkg-buildpackage,
since debuild doesn't recognize the environment variables that it
claims to recognize.
git-archimport-id: mwolson@gnu.org--2005/muse--main--1.0--patch-195