[mutter] (12 commits) Non-fast-forward update to branch wip/halfline/silence-x-io-errors

[Ray Strode <halfline src gnome org>]

The branch 'wip/halfline/silence-x-io-errors' 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:

  2692218... xwayland: use g_autoptr for GError in xserver_died
  32da466... xwayland: Don't abort if Xwayland crashes

Commits added to the branch:

  b6f5bab... wayland: Plug surface pending state contents leak (*)
  7945ee5... backends: Remove X11 idle-monitor backend (*)
  84e575b... x11: Allow XTest and core events to reset idletime (*)
  4af00ae... idle-monitor: Take idle inhibition into account (*)
  657417a... backend: Reset idle when lid is opened or resuming from sus (*)
  01a0fa9... idle-monitor: Add ResetIdletime API, for testing purposes (*)
  f6cd877... native: Disable the use of KMS modifiers by default (*)
  7fdac6d... monitor-manager-kms: Use g_autoptr for error (*)
  773b838... monitor-manager-kms: Don't add GPU if it fails (*)
  bc05e49... gpu-kms: Return NULL, not FALSE (*)
  bb65854... xwayland: use g_autoptr for GError in xserver_died
  2d80fd0... xwayland: Don't abort if Xwayland crashes

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