[gtk] (19 commits) Non-fast-forward update to branch wip/otte/paintable

[Benjamin Otte <otte src gnome org>]

The branch 'wip/otte/paintable' 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:

  c0f8ffc... aboutdialog: Make logo a paintable
  f6f3015... dnd: Make dnd icon API take a paintable
  6941d57... gtk: Add GtkMediaStream
  b4ba117... demos: Add a video benchmark to widgetbowl demo
  25b953e... gtk: Add GtkMediaControls
  bb6f158... gtk-demo: Add a video example (with controls) to the images
  3ca0d1d... mediastream: Add constructor taking a GFile
  efc3dc9... css: Add initial support for Houdini-style paint() images
  6df1a8a... THIS IS EVIL DEMO CODE, DO NOT LOOK AT IT.
  9088a58... entry: Remove cursor adjustment APIs
  189dce6... paintable: Add gdk_paintable_compute_concreate_size()
  0ecd26c... iconhelper: Rename function
  9d8955b... iconhelper: Rework to allow resizing of paintables
  b8cb561... gtk-demo: Add paintable demo
  23c6f5f... demos: Add an animated paintable demo
  534391c... demos: Round up the paintable demos with a media stream

Commits added to the branch:

  91341c7... cssimage: Implement dynamicity for cross-fades
  11baf24... aboutdialog: Make logo a paintable
  94a9f6e... dnd: Make dnd icon API take a paintable
  5306194... gtk: Add GtkMediaStream
  8013a4c... gtk: Add GtkMediaFile
  7c1bc3a... build: Add ffmpeg requirement
  3bc5024... gtk: Add ffmpeg implementation of GtkMediaFile
  30cf30f... gtk: Add GtkMediaControls
  4ea18f1... gtk-demo: Add a video example (with controls) to the images
  814b1f4... demos: Add a video benchmark to widgetbowl demo
  a4118dd... css: Add initial support for Houdini-style paint() images
  3a63f43... THIS IS EVIL DEMO CODE, DO NOT LOOK AT IT.
  1f55eeb... entry: Remove cursor adjustment APIs
  2b20411... paintable: Add gdk_paintable_compute_concreate_size()
  3dec7f2... iconhelper: Rename function
  3aa8373... iconhelper: Rework to allow resizing of paintables
  7f18970... gtk-demo: Add paintable demo
  c861b1a... demos: Add an animated paintable demo
  7ec68d2... demos: Round up the paintable demos with a media stream