[gtk] (6 commits) Non-fast-forward update to branch wip.win32.fixes

[Chun-wei Fan <fanchunwei src gnome org>]

The branch 'wip.win32.fixes' 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:

  e133ef4... demos/gtk-demo|widget-factory: Temporarily disable gui_app 
  dc51d55... media/gstreamer: Support using GL for video for Windows
  4ca4bec... gtkgstsink.c: Support EGL on Windows as well
  bc4e7dd... media-gstreamer: Provide fallback mode for playback
  725c0b1... gtk/meson.build: Fix linking on Visual Studio 2013

Commits added to the branch:

  52d1c0c... media/gstreamer: Support using GL for video for Windows (*)
  ccdec5d... gtkgstsink.c: Support EGL on Windows as well (*)
  16f307b... media-gstreamer: Provide fallback mode for playback (*)
  f1f225c... Merge branch 'gst.gl.win32' into 'master' (*)
  4ea4e83... demos/gtk-demo|widget-factory: Temporarily disable gui_app 
  e42dea4... gtk/meson.build: Fix linking on Visual Studio 2013

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