[mutter] (4 commits) Non-fast-forward update to branch wip/carlosg/async-xwayland-startup

[Carlos Garnacho <carlosg src gnome org>]

The branch 'wip/carlosg/async-xwayland-startup' 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:

  98776cb... tests: Ensure MetaX11Display is initialized before running 
  8ca343c... tests: Set fatal log handler on clutter tests
  65465e1... core: Make meta_display_init_x11() an async function
  bab1f9f... xwayland: Do not block on Xwayland initialization

Commits added to the branch:

  bdaedbc... tests: Ensure MetaX11Display is initialized before running 
  d066d7d... tests: Set fatal log handler on clutter tests
  85d1694... core: Make meta_display_init_x11() an async function
  84b4d2c... xwayland: Do not block on Xwayland initialization