[gtk] (7 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:

  d0b35fe... gl renderer: Use scale_x and scale_y everywhere

Commits added to the branch:

  6883c22... gl: specify attribute locations for vUv and aPosition (*)
  a47c006... macos: enable GL renderer by default (*)
  4087055... Merge branch 'wip/chergert/gdk-macos-for-master' into 'mast (*)
  4430314... customsorter: Add missing nullable annotation (*)
  c0586ca... Merge branch 'wip/jfelder/customsorter-null' into 'master' (*)
  0a662b5... gl renderer: Use scale_x and scale_y everywhere
  4bc276d... gl renderer: Ignore crossfades between equal texture nodes

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