[gtk] (9 commits) Non-fast-forward update to branch wip/baedert/for-master

[Timm Bäder <baedert src gnome org>]

The branch 'wip/baedert/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:

  39f9bb2... menu: Remove menu_queue_resize
  3383d32... menu: Remove unused members
  02f4edb... menu: Align function parameters
  a059c80... menuitem: Remove unused members
  af62484... colorscale: Remove some duplicated code

Commits added to the branch:

  977ac2b... gl: Do less work on glyph caching (*)
  123cbd4... gl: Make icon cache work like glyph cache (*)
  d3ad178... Merge branch 'glyphcache-fiddling' into 'master' (*)
  f9e100c... menu: Remove menu_queue_resize (*)
  93122ac... menu: Remove unused members (*)
  d570121... menu: Align function parameters (*)
  4c4bca0... menuitem: Remove unused members (*)
  7344723... colorscale: Remove some duplicated code (*)
  989307e... stackswitcher: Inherit from GtkWidget

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