[gdm] Created tag 3.29.91

[Ray Strode <halfline src gnome org>]

The unsigned tag '3.29.91' was created.

Tagger: Ray Strode <rstrode redhat com>
Date: 1534172224 -0400

    3.29.91
    
    - CVE-2018-14424 - double free fix
    - follow up fixes dealing with login screen reaping form last release
    - add more debug logging
    - Translation updates

Changes since the last tag '3.29.90':

Chris Coulson (1):
      display-store: Pass the display object rather than the id in the removed signal

Niels De Graef (1):
      Add CI to GDM.

Ray Strode (14):
      Merge branch 'wip/nielsdg/add-ci' into 'master'
      local-display-factory: add more debug messages to new vt handling code
      local-display-factory: don't start two greeters at startup
      session-worker: don't switch VTs if we're already on the right VT
      Merge branch 'wip/fix-double-greeters' into 'master'
      session-worker: don't set PAM_TTY to bogus value on failure
      Merge branch 'wip/fix-pam-group' into 'master'
      local-display-factory: don't jump to failed display
      local-display-factory: add some more debug statements
      Merge branch 'wip/fix-xorg-fallback' into 'master'
      display: tie skeleton handlers to object lifetime
      Merge branch 'wip/CVE-2018-14424-use-after-free' into 'master'
      NEWS: update for release
      configure: bump to 3.29.91