[mutter] (4 commits) Non-fast-forward update to branch gbsneto/graphene-ray

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

The branch 'gbsneto/graphene-ray' 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:

  b6397fd... Use graphene_ray_t to pick actors
  6ce070f... clutter/actor: Remove cached inverse transform
  c7e352e... clutter/pick-context: Remove clutter_pick_context_get_frame

Commits added to the branch:

  aec4875... Use graphene_ray_t to pick actors
  a9ab55a... clutter/actor: Remove cached inverse transform
  0caa6d0... clutter/pick-context: Remove clutter_pick_context_get_frame
  a77b1fd... clutter/actor: Don't push identity transforms