[gtk] (6 commits) Non-fast-forward update to branch wip/jimmac/sidebar-backdrop

[Jakub Steiner <jimmac src gnome org>]

The branch 'wip/jimmac/sidebar-backdrop' 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:

  eda415a... Adwaita: don't backdrop labels

Commits added to the branch:

  eae5eae... gl: use glFramebufferTexture2D to set framebuffer texture (*)
  f32ae29... macos: fix various compiler warnings (*)
  ee47ddf... lpr: fix cast warning (*)
  82b4c34... gl: add some debugging information to DEBUG_OPS (*)
  562c7b1... Merge branch 'wip/chergert/gdk-macos-for-master' into 'mast (*)
  3c873e1... Adwaita: don't backdrop labels

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