[gtk] (5 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:

  41d12b5... widget factory: Plug a memory leak
  ab0076e... widget: Unref previous transform
  fbd3b50... suppression file: Add rule for media extension gio modules
  4ad67ba... transform: Fix identity transform fast paths
  73744e2... iconhelper: Try to avoid some save/restore calls

Commits added to the branch:

  1499b7c... widget factory: Plug a memory leak
  2dbe06b... widget: Unref previous transform
  00a9d50... suppression file: Add rule for media extension gio modules
  06d0bdb... transform: Fix identity transform fast paths
  6f1fc95... iconhelper: Try to avoid some save/restore calls