[mutter] (8 commits) Non-fast-forward update to branch wip/surface-content

[Jasper St. Pierre <jstpierre src gnome org>]

The branch 'wip/surface-content' 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:

  efcd402... shaped-texture: Clean up code flow a bit
  69bf452... cullable: Reset the culling state instead of skipping the t
  f5d295f... shaped-texture: Move unobscured_region processing here
  0a57add... Always map the client and frame windows
  6f376dd... Move position-changed / size-changed signals to the MetaWin
  5eb3f42... window-actor: Split into two subclasses of MetaSurfaceActor

Commits added to the branch:

  71efbf0... shaped-texture: Constify clip (*)
  1ebaaa1... shaped-texture: Clean up code flow a bit (*)
  9542b46... window-actor: Clean up whitespace (*)
  b5c93ee... cullable: Reset the culling state instead of skipping the t
  f6f8049... shaped-texture: Move unobscured_region processing here
  3374881... Always map the client and frame windows
  7a0e5b2... Move position-changed / size-changed signals to the MetaWin
  f534365... window-actor: Split into two subclasses of MetaSurfaceActor

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