[gtk] (5 commits) Non-fast-forward update to branch matthiasc/for-master

[Matthias Clasen <matthiasc src gnome org>]

The branch 'matthiasc/for-master' 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:

  6d14289... popovermenu: Initial accessibility setup
  5c7ac97... popovermenubar: Initial accessibility setup
  0f81e23... modelbutton: Initial accessibility setup
  6e788be... modelbutton: Recreate our AT context
  1badc34... atspi: Give model buttons a click action too

Commits added to the branch:

  2bfd419... popovermenu: Initial accessibility setup
  758bcd5... popovermenubar: Initial accessibility setup
  f96a1cf... modelbutton: Initial accessibility setup
  3e43dda... modelbutton: Recreate our AT context
  88eb3a9... atspi: Give model buttons a click action too