[mutter] (2 commits) Non-fast-forward update to branch wip/nielsdg/n-planes

[Jonas Ådahl <jadahl src gnome org>]

The branch 'wip/nielsdg/n-planes' 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:

  c21ed06... cogl: Add a notion of pixel format planes

Commits added to the branch:

  553211d... clutter/stage: Actually set key focus to an actor on key fo (*)
  8e204e0... cogl: Add a notion of pixel format planes

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