[mutter] (14 commits) ...cogl/matrix-stack: Use graphene types on entries

[Carlos Garnacho <carlosg src gnome org>]

Summary of changes:

  b1a1d4e... Remove fog support (*)
  4f2b217... clutter/actor: Drop ClutterActor:clip property (*)
  3ecae81... clutter/tests: Rename variable (*)
  cada2b5... Add Graphene dependency (*)
  7c7ccb2... clutter: Pull in Clutter dependencies (*)
  959a418... Replace CoglEuler by graphene_euler_t (*)
  1687534... Remove CoglQuaternion (*)
  ba0f17f... Replace CoglVector* by graphene_vec*_t (*)
  a5d0cfe... Replace ClutterVertex by graphene_point3d_t (*)
  cd293f7... Replace ClutterSize by graphene_size_t (*)
  160cc91... Replace ClutterPoint by graphene_point_t (*)
  94682e6... Replace ClutterRect by graphene_rect_t (*)
  bdf5e3f... Replace ClutterGeometry by graphene_rect_t (*)
  8cfa8dc... cogl/matrix-stack: Use graphene types on entries (*)

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