[gtk] (8 commits) Non-fast-forward update to branch matthiasc/for-master

[Matthias Clasen <matthiasc src gnome org>]

The branch 'matthiasc/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:

  94721b6... quiet a compiler warning in release builds
  bc19ffe... testsuite: Improve --generate support
  d935d5c... css: Remove an unused function
  003b397... css: Drop unsused bitmasks
  7f176b4... Try harder to make ci not timeout

Commits added to the branch:

  d668d2f... Use bundle id instead of package name for the macOS preview (*)
  dccb83c... quiet a compiler warning in release builds (*)
  20b9263... testsuite: Improve --generate support (*)
  94b1e72... css: Remove an unused function (*)
  cb88de5... css: Drop unsused bitmasks (*)
  b020a3f... Try harder to make ci not timeout (*)
  82dc7b9... Fix the filetransfer portal initialization (*)
  e8eb1df... Speed up gtk_widget_pick

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