[clutter-gst] (4 commits) Non-fast-forward update to branch wip/overlays

[Lionel Landwerlin <llandwerlin src gnome org>]

The branch 'wip/overlays' 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:

  e34ec34... untested/uncompiled overlay support starting point

Commits added to the branch:

  658b7d9... plugin: add debug category for video sink
  d53865f... introspection: use same pkg as compile flags
  3c3f0ab... auto-video-sink: rename to avoid GType name conflict with 2
  1165fc4... untested/uncompiled overlay support starting point