[gdm] (17 commits) Non-fast-forward update to branch session-selection-again

[Ray Strode <halfline src gnome org>]

The branch 'session-selection-again' 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:

  e3b8850... display: Handle failure before display registration
  c3422d5... daemon: Provide more flexibility for configuring display se
  1d986d8... libgdm: Sort session list
  d5faacf... data: Enable wayland for single GPU vendor nvidia machines
  acee8ce... worker: don't load user settings for program sessions
  8ca5801... session: support new accountsservice Session and SessionTyp
  a6eaf51... local-display-factory: Fix overrun in session type list gen
  d8d32c1... local-display-factory: Add missing continue statements
  96ca4f7... session: Fix operators when computing session dirs
  9a318c5... manager: Plumb supported-session-types down to the session
  118ff68... session: Fix gdm_session_is_wayland_session

Commits added to the branch:

  b0c8d4e... Merge branch 'gdm-runtime-config-end-lines' into 'master' (*)
  2e7636d... display: Handle failure before display registration (*)
  f66ff43... Merge branch 'handle-failure-before-display-registration' i (*)
  04853a3... daemon: Provide more flexibility for configuring display se (*)
  ae81d9b... libgdm: Sort session list (*)
  9ecf839... data: Enable wayland for single GPU vendor nvidia machines (*)
  201cb8f... Merge branch 'better-nvidia-wayland-support' into 'master' (*)
  2a871da... worker: don't load user settings for program sessions (*)
  495b4fc... session: support new accountsservice Session and SessionTyp (*)
  e8e6a7e... Merge branch 'support-accountsservice-session-and-session-t (*)
  f4922c0... local-display-factory: Fix overrun in session type list gen (*)
  b1ba6a9... Merge branch 'fix-overrun' into 'master' (*)
  bf9ecc6... local-display-factory: Add missing continue statements (*)
  3d25d19... Merge branch 'fix-session-type-selection' into 'master' (*)
  887e462... session: Fix operators when computing session dirs
  4a7ef1e... manager: Plumb supported-session-types down to the session
  b136791... session: Fix gdm_session_is_wayland_session

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