[mutter] (11 commits) ...clutter/effect: Move ClutterEffect creation to ClutterActor

[Marge Bot <marge-bot src gnome org>]

Summary of changes:

  6654053... clutter/paint-nodes: Make ClutterLayerNode always push/pop (*)
  5794871... clutter/offscreen-effect: Add new create_pipeline() vfunc (*)
  5587c70... clutter/blur-effect: Switch to create_pipeline vfunc (*)
  5c62808... clutter/brightness-contrast-effect: Switch to create_pipeli (*)
  b3641e0... clutter/colorize-effect: Switch to create_pipeline vfunc (*)
  691d317... clutter/desaturate-effect: Switch to create_pipeline vfunc (*)
  26c1a5e... clutter/offscreen-effect: Use paint nodes to paint target (*)
  ea20076... clutter/offscreen-effect: Implement paint_node() (*)
  4898408... clutter/effect: Add paint nodes to all paint vfuncs (*)
  46c68f3... clutter/offscreen-effect: Document paint nodes (*)
  431bde9... clutter/effect: Move ClutterEffect creation to ClutterActor (*)

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