[gtk] (15 commits) Non-fast-forward update to branch wip/otte/for-master

[Benjamin Otte <otte src gnome org>]

The branch 'wip/otte/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:

  c677685... icontheme: Fix variable mixup leading to crashes

Commits added to the branch:

  b664b2d... Set correct accessible relations for GtkMenuButton (*)
  0120ff3... Merge branch 'master' into menu_button_a11y_improvements (*)
  f95c21b... gtkcolorbutton: Fix documentation (*)
  0cce92a... Merge branch 'fix-typo' into 'master' (*)
  8c34dd5... gsk: Add a test for transform_bounds (*)
  ba5d010... Delete unneccessary comment and make other more descriptive (*)
  52a8492... rendernodepaintable: Provide accurate aspect ratio (*)
  27d662f... node editor: Preserve aspect ratio (*)
  6a60214... gsk: Handle 2D transforms better (*)
  bef54a3... transform: Improve docs (*)
  63647ca... testsuite: Run the clipboard test in isolation (*)
  37a54eb... Merge branch 'matthiasc/for-master' into 'master' (*)
  15ffd49... Apply 4 suggestion(s) to 1 file(s) (*)
  76d31ff... Merge branch 'menu_button_a11y_improvements' into 'master' (*)
  cf38307... icontheme: Fix variable mixup leading to crashes

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