[Debian GNUstep maintainers] Transition underway

[Yavor Doganov]

As you're aware, we're doing a final GNUstep transition for buster.
Please refrain from uploads of any reverse dependencies as this
disrupts the transition (resets the counter), and may lead to
additonal work for the relase team (e.g., chess.app must be given-back
on armhf to be rebuilt against the new core libraries).

The only sourceful upload that is appreciated is of fortunate.app
(fixing the FTBFS bug), but this should be done only *after*
gnustep-gui is built and installed on armhf.

The core packages are uploaded to unstable; I've merged the
experimental branches to master and will delete them as soon as
Salsa's migration to the new GitLab release is complete.

This is the first transition where co-installation of different
GNUstep core library versions is possible.  I knew this would lead to
some breakage (because the -runtime packages are now providing
binaries only built for the newest versions), it will be fixed as soon
as the reverse dependencies are binNMUed.

I'll test all rdeps in this state (before the binNMUs) so that we are
aware which packages are broken and see if we can avoid it somehow in
the future (or switch back to the tight versioning if the breakage is
severe and affects many and/or important packages).  I'm sure some of
these problems are unavoidable and it's just a matter of weighing up
the pros & cons; IOW -- whether partial upgrades are worth or not.

For now, once the binNMUs get flowing in, we should concentrate in
releasing buster with a GNUstep stack that is as bug-free as possible.
Please test as many apps as possible and report problems to the BTS
with the appropriate severity.