[gtk] (8 commits) Non-fast-forward update to branch included-icons

[Matthias Clasen <matthiasc src gnome org>]

The branch 'included-icons' 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:

  6c8d32f... resources: Include more icons
  ae3abf9... spin button: Use guaranteed icons
  44c8202... page setup dialog: Use theme icons
  fad1be6... widget-factory: Include our own icons
  12c93cf... sidebar demo: Use an existing icon
  eb797f3... stack demo: Use the proper icon name
  9e86373... gtk-demo: Include our own icons

Commits added to the branch:

  bcafd20... resources: Include more icons
  7207c82... spin button: Use guaranteed icons
  16026b6... page setup dialog: Use theme icons
  ce5f198... widget-factory: Include our own icons
  93514b4... sidebar demo: Use an existing icon
  5f73d52... stack demo: Use the proper icon name
  ffc7a81... gtk-demo: Include our own icons
  4fb342f... Update check-icon-names tests