tarballs generated by Makepkgs

[Christoph Hellwig]

currently Makepkgs generats the source tarball as
package-version.src.tar.gz, which is not what we used for recent
releases and not what most other open source packages do.  I'd like to
change it to package-version.tar.gz, but that currently collides with
the binary tar packages.

Does anyone still need those binary tar packages?  If yes we should
rename them, too or otherwise just remove them.