[gdm] (13 commits) Non-fast-forward update to branch wip/wayland-rebase

[Jasper St. Pierre <jstpierre src gnome org>]

The branch 'wip/wayland-rebase' 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:

  7d6f4ed... worker: move PAM tty/display setup to open session
  48fdfbb... daemon: add new gdm_session_is_running method
  bb323b5... daemon: move user session code from slave to main daemon
  aaaafd1... slave: add ability to reset launch environment
  61e70e5... emancipation proclamation

Commits added to the branch:

  ed3625c... gdm-slave: Kill unused constant
  f4a96ec... gdm-session: Remove some code duplication
  e2d05cb... gdm-session: Sync search dirs up with search dirs in libgdm
  0a7b2e7... worker: move PAM tty/display setup to open session
  4ca6ae1... daemon: add new gdm_session_is_running method
  db326a1... daemon: move user session code from slave to main daemon
  72b4613... Integrate the slaves into the main daemon process
  f35df90... slave: add ability to reset launch environment
  59b947c... session: Prevent memory leaks by removing strdup accessors
  ff217f2... manager: Change code that activates / unlocks sessions to t
  e592edf... manager: Add infrastructure to hand-over Wayland session
  f4c675d... Add wayland-sessions
  374c3ac... own display server