[gdm] (7 commits) Non-fast-forward update to branch wip/fix-missing-login-screen

[Ray Strode <halfline src gnome org>]

The branch 'wip/fix-missing-login-screen' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  9850a47... manager: plug leak in maybe_activate_other_session
  b5b95d5... manager: start login screen if old one is finished
  a4f2675... manager: don't bail if session disappears out from under us

Commits added to the branch:

  624a22f... Migrate from intltool to gettext. (*)
  7e59dc9... Merge branch 'wip/nielsdg/intltool2gettext' into 'master' (*)
  a7f210d... manager: avoid leaking session_id (*)
  bfdb201... manager: gracefully handle the case of no session for login (*)
  7e39951... manager: plug leak in maybe_activate_other_session
  9b65b93... manager: start login screen if old one is finished
  155ee7e... manager: don't bail if session disappears out from under us

(*) This commit already existed in another branch; no separate mail sent