[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:

  633d47e... csslookup: Remove tautological if expression
  d02267b... cssanimatedstyle: Keep transition_info_add from recursing

Commits added to the branch:

  0e28899... csslookup: Remove tautological if expression
  9bfb230... cssanimatedstyle: Keep transition_info_add from recursing
  1e39ffc... bitmask: Add _gtk_allocated_bitmask_to_string
  08c2a10... csslookup: Remove 'missing' bitmask
  2074377... csslookup: Remove 'relevant' parameter from _init
  619245e... cssinitialvalue: Make _compute public
  b6ac424... cssstaticstyle: Compute initial/inherit values directly