[gtk] (7 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:

  63a389f... build: Redo the tools build
  e9099c9... Unify border-spacing handling
  80b3dfa... Reduce use of GtkStyleContext
  27d70ce... Drop unused logo resource
  8a5e99b... Move the gesture icons in the right place
  a976737... Remove vestigial glade support
  ef1f7e5... label: Drop some unused includes

Commits added to the branch:

  ac0f524... build: Redo the tools build
  2d0d579... Unify border-spacing handling
  10d5705... Reduce use of GtkStyleContext
  1ac9400... Drop unused logo resource
  3cc7d9b... Move the gesture icons in the right place
  38e2f91... Remove vestigial glade support
  98c247e... label: Drop some unused includes