[gdm] (19 commits) Non-fast-forward update to branch wip/wayland-for-merge

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

The branch 'wip/wayland-for-merge' 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:

  081be59... slave: Kill off some unused code
  066d4e8... Move gdm_slave_run_script to common code
  e5d4c1b... server: Move /Init script processing here
  774a237... session-worker: Move PostLogin / PreSession / PostSession s
  930fb58... Integrate the slaves into the main daemon process
  0081813... display: Enforce a few invariants
  623c012... display: Remove some unnecessary parts from dispose
  27346c6... display: Clean up old signal handlers
  e42e5cd... manager: Make migrated a special case when starting the ses
  831fe40... manager: Rename the "user session" or "session" to the "see
  470a061... manager: Don't reuse the same X server when we have a displ
  afe751c... session-worker: Allocate a new VT for sessions with their o
  e405f55... Add wayland-sessions
  10375a0... session: Add a simple and naive way to detect Wayland sessi
  2659ed0... session: Wayland sessions bypass Xsession
  8867d02... session: Wayland sessions have their own display server
  821570d... Revert "move over to using 'dconf compile' and file-db"

Commits added to the branch:

  7cf2ad2... server: Kill off some dead code (*)
  f061d87... slave: Kill off some dead code (*)
  804af85... server: Pull out common X server args
  6a5ac6c... server: Force server regeneration off
  8ca288e... Move gdm_slave_run_script to common code
  e340b2c... server: Move Init script processing here
  e1b1143... session-worker: Move PostLogin / PreSession / PostSession h
  90fc57d... Integrate the slaves into the main daemon process
  e71630b... display: Enforce a few invariants
  d20848e... display: Remove some unnecessary parts from dispose
  207ab5d... display: Clean up old signal handlers
  363a7f8... manager: Make migrated a special case when starting the ses
  73a871b... manager: Rename the "user session" or "session" to the "see
  5270763... manager: Don't reuse the same X server when we have a displ
  95364e4... session-worker: Allocate a new VT for sessions with their o
  501533a... Add wayland-sessions
  82a04c1... session: Add a simple and naive way to detect Wayland sessi
  b832144... session: Wayland sessions bypass Xsession
  ba2ef85... session: Wayland sessions have their own display server

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