[gdm] (12 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:

  59be35c... Revert "move over to using 'dconf compile' and file-db"
  a932979... signals
  6166709... worker: move PAM tty/display setup to open session
  6d8c028... daemon: move user session code from slave to main daemon
  09e7d6c... Integrate the slaves into the main daemon process
  1a8bb37... slave: add ability to reset launch environment
  5283146... session: Prevent memory leaks by removing strdup accessors
  f21f1ef... manager: Reset our own greeter when in a Wayland session
  f102146... Add wayland-sessions
  f04263c... own display server
  fcc22a1... ff

Commits added to the branch:

  98a32e4... main: Remove debug log toggle on SIGUSR1 (*)
  956d7d1... server: Process SIGUSR1 more carefully (*)
  64b8e36... Revert "move over to using 'dconf compile' and file-db"
  b7e34cb... worker: move PAM tty/display setup to open session
  00ac0c9... daemon: move user session code from slave to main daemon
  8d1987c... Integrate the slaves into the main daemon process
  33ceba0... slave: add ability to reset launch environment
  21bb886... session: Prevent memory leaks by removing strdup accessors
  e18ad7b... manager: Reset our own greeter when in a Wayland session
  0de32aa... Add wayland-sessions
  333f379... own display server
  2cdb942... ff

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