[mutter] (2 commits) Non-fast-forward update to branch wip/chergert/has-accessible

[Christian Hergert <chergert src gnome org>]

The branch 'wip/chergert/has-accessible' 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:

  48cc0f4... clutter: add clutter_actor_has_accessible()
  b5e13fc... cally: avoid creating accessible during actor removal

Commits added to the branch:

  5b225d0... clutter: add clutter_actor_has_accessible()
  d2575bf... cally: avoid creating accessible during actor removal