gnome-session-48.0-160000.2.2

- Update to version 48.0:
  + The gnome-session script no longer re-runs itself as a
    subprocess.
  + GNOME OS CI was ported to use a CI template.
  + Integrated new CI-based release process.
  + Fix bugs caused by systemd v257's inhibitor behavior changes.
  + Make `gnome-session --version` print to stdout rather than
    syslog.
  + README updates.
  + Updated translations.
- Bump basever define to 48, following upstream changes.

- Ensure gnome-session-wayland or -xsession is required by
  gnome-session.

- Build gnome-session-wayland also on s390x: It was originally
  excluded because xwayland did not exist. That has been solved in
  2021 though.

- Move update-alternative post/postun scriptlets from the main
  package to the xsession sub-package (boo#1233299).
- Drop gnome-session-default-session: this was there to also
  support the alternative fallback-session, but that one was
  dropped at the times of GNOME 3.8.

- Split out new sub-package gnome-session-xsession.

- Update to version 47.0.1:
  + Add back gnome-session-ctl.

- Update to version 47.0:
  + Allow to disable X11 sessions.
  + Updated translations.
- Bump base_ver define to 47.

- Update to version 46.0:
  + Updated translations.

- Update to version 46.rc:
  + Fix for race a shutdown with loginctl terminate-user
  + Updates for Access portal changes
  + Updated translations.

- Update to version 46.alpha:
  + Make ctrl-c behave better in gnome-session-inhibit.
  + Advertise support for headless session.
  + Build goo cleanups.
  + Copyright header cleanups.
  + README cleanups.
  + Updated translations.
- Drop -D systemd=true -D systemd_journal=true meson parameters: no
  longer supported to be switched off.