[gtk] (22 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:

  cec54d6... gtk: Add GtkMediaStream
  1bd5295... gtk: Add GtkMediaFile
  864ed9d... mediafile: Turn into an extension point
  75c4ffd... build: Add ffmpeg requirement
  4037d75... gtk: Add ffmpeg implementation of GtkMediaFile
  efce607... gtk: Add GtkMediaControls
  41c5f96... gtk: Add GtkVideo
  064d1de... gtk-demo: Add a video example (with controls) to the images
  14374e1... demos: Add a video benchmark to widgetbowl demo
  3db64ca... css: Add initial support for Houdini-style paint() images
  d20dd46... THIS IS EVIL DEMO CODE, DO NOT LOOK AT IT.
  efbe2aa... paintable: Add gdk_paintable_compute_concrete_size()
  dcbc29a... iconhelper: Rename function
  8448e60... iconhelper: Rework to allow resizing of paintables
  9755cbe... gtk-demo: Add paintable demo
  a882eda... demos: Add an animated paintable demo
  87259db... demos: Round up the paintable demos with a media stream
  f1a8074... build: Add gstreamer dependency
  024d733... gtk: Add a GStreamer implementation to GtkMediaFile
  3a807df... build: Make GStreamer backend the default

Commits added to the branch:

  8c2fb70... gtk: Add GtkMediaStream
  6a5aafd... gtk: Add GtkMediaFile
  902fac8... mediafile: Turn into an extension point
  721704f... build: Add ffmpeg requirement
  ff2ab1d... gtk: Add ffmpeg implementation of GtkMediaFile
  9b4883c... gtk: Add GtkMediaControls
  c04ceb0... gtk: Add GtkVideo
  5162188... gtk-demo: Add a video example (with controls) to the images
  d0a16c3... demos: Add a video benchmark to widgetbowl demo
  f4f8da6... css: Add initial support for Houdini-style paint() images
  504d17a... THIS IS EVIL DEMO CODE, DO NOT LOOK AT IT.
  92c62e0... paintable: Add gdk_paintable_compute_concrete_size()
  f615210... iconhelper: Rename function
  ab1abed... iconhelper: Rework to allow resizing of paintables
  7d989b7... gtk-demo: Add paintable demo
  b518445... demos: Add an animated paintable demo
  d0840e1... demos: Round up the paintable demos with a media stream
  5b7e17a... build: Add gstreamer dependency
  77045f5... gtk: Add a GStreamer implementation to GtkMediaFile
  7659174... build: Make GStreamer backend the default
  8f8b91e... demos: Unbreak icon for fishbowl demo
  92a5424... gtk-demo: Add a simple video player example