[gtk] (12 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:

  ba62f1b... builderparser: Only allocate subparser stack when needed
  60d5196... builderparser: Keep properties in a GPtrArray
  96c1526... builder: Use a GPtrArray when parsing signals
  84b112c... accessible: Fix memory leak if context is unset
  95c6a7d... widget: Shorten get_halign() a bit
  97b19b8... builderparser: Save finalizers in a GPtrArray

Commits added to the branch:

  d205265... Update Polish translation (*)
  946a496... Update Basque translation (*)
  506423c... Update Basque translation (*)
  12958e5... builderparser: Only allocate subparser stack when needed
  2bcb403... builderparser: Keep properties in a GPtrArray
  267757b... builder: Use a GPtrArray when parsing signals
  42d4c19... accessible: Fix memory leak if context is unset
  e4805dd... widget: Shorten get_halign() a bit
  94e5477... builderparser: Save finalizers in a GPtrArray
  cb94354... label: Fix a potential memory leak
  5755f15... gl renderer: Properly y-flip non-offscreen children of roun
  227a479... gl renderer: Don't reset offset when drawing offscreen

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