[gdm] Created tag 3.28.3

[Ray Strode <halfline src gnome org>]

The unsigned tag '3.28.3' was created.

Tagger: Ray Strode <rstrode redhat com>
Date: 1534173070 -0400

    3.28.3
    
    - CVE-2018-14424 - double free fix
    - lifecycle fixes to libgdm/GdmClient
    - follow up fixes dealing with login screen reaping form last release
    - allow pam modules to use SIGUSR1
    - set PWD for user session
    - tell cirrus not to use wayland
    - Translation updates

Changes since the last tag '3.28.2':

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

Iain Lane (1):
      libgdm: Drop weak refs on the GDBusConnection

Marco Trevisan (Treviño) (9):
      libgdm: don't keep manager proxy around longer than we need it
      libgdm: get connection explicitly
      libgdm: Unref the manager propagated from task
      libgdm: Don't double-ref the connection got from task
      libgdm: Don't leak connection on sync re-authentication
      libgdm: Use auto-pointers and cleanup code
      libgdb: Try to reuse connections from the available proxies
      libgdm: Don't save manager address
      libgdm: Return NULL on invalid client instances

Pieter Schalk Schoeman (2):
      Update Afrikaans translation
      Update Afrikaans translation

Ray Strode (11):
      libgdm: drop support for serializing multiple opens
      libgdm: fix pointer/boolean task confusion
      libgdm: use g_object_unref instead of g_clear_object for weakrefs
      Merge branch 'fix_issue_381' into 'master'
      data: change cirrus blacklist to use gdm-disable-wayland
      Merge branch 'cherry-pick-a913eea7' into 'gnome-3-28'
      display: tie skeleton handlers to object lifetime
      session-worker: unblock SIGUSR1 before PAM
      session-worker: set PWD for user session
      NEWS: update for release
      configure: bump to 3.28.3

Tong Hui (1):
      Update Chinese (China) translation