[mutter] (11 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:

  33dfae6... clutter/paint-nodes: Make ClutterLayerNode always push/pop
  c317eeb... clutter/offscreen-effect: Add new create_pipeline() vfunc
  2a7b736... clutter/blur-effect: Switch to create_pipeline vfunc
  9a66115... clutter/brightness-contrast-effect: Switch to create_pipeli
  b3a2fae... clutter/colorize-effect: Switch to create_pipeline vfunc
  dada730... clutter/desaturate-effect: Switch to create_pipeline vfunc
  c924a84... clutter/offscreen-effect: Use paint nodes to paint target
  145b6c5... clutter/offscreen-effect: Implement paint_node()
  07e6787... clutter/effect: Add paint nodes to all paint vfuncs
  ed7ccd3... clutter/offscreen-effect: Document paint nodes
  0f16b40... clutter/effect: Move ClutterEffect creation to ClutterActor

Commits added to the branch:

  1dad199... clutter/paint-nodes: Make ClutterLayerNode always push/pop
  4e5d4d8... clutter/offscreen-effect: Add new create_pipeline() vfunc
  4fe24a1... clutter/blur-effect: Switch to create_pipeline vfunc
  2ad4cab... clutter/brightness-contrast-effect: Switch to create_pipeli
  7a26160... clutter/colorize-effect: Switch to create_pipeline vfunc
  47b3d1d... clutter/desaturate-effect: Switch to create_pipeline vfunc
  788f54c... clutter/offscreen-effect: Use paint nodes to paint target
  77a56e9... clutter/offscreen-effect: Implement paint_node()
  216d17e... clutter/effect: Add paint nodes to all paint vfuncs
  5171775... clutter/offscreen-effect: Document paint nodes
  6863b08... clutter/effect: Move ClutterEffect creation to ClutterActor