[mutter] (20 commits) Non-fast-forward update to branch gbsneto/offscreen-paint-node

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

The branch 'gbsneto/offscreen-paint-node' 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:

  9d7dbdd... clutter/paint-nodes: Add opacity overriding to ClutterActor
  22aa5ee... clutter/paint-nodes: Don't skip pipeline node constructor
  969988e... clutter/paint-nodes: Add new ClutterLayerNode API
  7370909... clutter/paint-nodes: Push and pop framebuffer even without 
  c0ab924... clutter/paint-nodes: Add serialization to layer node
  fc185d9... Introduce ClutterBlitNode
  d1363da... clutter/offscreen-effect: Remove CoglMaterial from public A
  9048ea9... clutter/offscreen-effect: Add new create_pipeline() vfunc
  78d8fb3... clutter/blur-effect: Switch to create_pipeline vfunc
  4f9c7e2... clutter/brightness-contrast-effect: Switch to create_pipeli
  8873bee... clutter/colorize-effect: Switch to create_pipeline vfunc
  b4fe663... clutter/desaturate-effect: Switch to create_pipeline vfunc
  e6256b0... clutter/offscreen-effect: Use paint nodes to paint target
  22a39ed... clutter/offscreen-effect: Implement paint_node()
  64e6294... clutter/offscreen-effect: Undeprecate clutter_offscreen_eff
  e7cea46... clutter/deform-effect: Use clutter_offscreen_effect_get_tar
  e39b3f2... clutter/offscreen-effect: Remove clutter_offscreen_effect_g
  37b30d7... clutter/effect: Add paint nodes to all paint vfuncs
  464890f... clutter/offscreen-effect: Document paint nodes
  0c19343... clutter/effect: Move ClutterEffect creation to ClutterActor

Commits added to the branch:

  6be6f04... clutter/paint-nodes: Add opacity overriding to ClutterActor (*)
  6f0719b... clutter/paint-nodes: Don't skip pipeline node constructor (*)
  03be5ed... clutter/paint-nodes: Add new ClutterLayerNode API (*)
  c261eb7... clutter/paint-nodes: Push and pop framebuffer even without  (*)
  96e8074... clutter/paint-nodes: Add serialization to layer node (*)
  5d7edde... Introduce ClutterBlitNode (*)
  59a3075... clutter/offscreen-effect: Remove CoglMaterial from public A
  be3743e... clutter/offscreen-effect: Add new create_pipeline() vfunc
  6ee3ece... clutter/blur-effect: Switch to create_pipeline vfunc
  f6c5736... clutter/brightness-contrast-effect: Switch to create_pipeli
  dbe0602... clutter/colorize-effect: Switch to create_pipeline vfunc
  ae14a0a... clutter/desaturate-effect: Switch to create_pipeline vfunc
  92365f9... clutter/offscreen-effect: Use paint nodes to paint target
  5215ee5... clutter/offscreen-effect: Implement paint_node()
  1129489... clutter/offscreen-effect: Undeprecate clutter_offscreen_eff
  0f7c6b8... clutter/deform-effect: Use clutter_offscreen_effect_get_tar
  4c0d7ec... clutter/offscreen-effect: Remove clutter_offscreen_effect_g
  46d580e... clutter/effect: Add paint nodes to all paint vfuncs
  5643e86... clutter/offscreen-effect: Document paint nodes
  4830399... clutter/effect: Move ClutterEffect creation to ClutterActor

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