[gtk] (20 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:

  f63d84c... cssrgbavalue: Add an opaque white singleton
  d494c59... cssrgbavalue: Add & use new_white()
  d55c0d9... cssanimatedstyle: Avoid unnecessary transition work
  c299c5c... cssanimatedstyle: Avoid type check in loop
  6827216... cssanimatedstyle: Save animation in array
  6e3ab02... gtkprivate: Only define gtk_internal_return_if* for consist
  08df059... cssimage: Use gtk_internal_return_val_*
  e795094... cssanimatedstyle: Make set_animated_value transfer-full
  322cbfb... cssmatcher: Inline node values into matcher
  14930b4... cssprovider: Fix compilation wth VERIFY_TREE set
  6231052... cssstaticstyle: Avoid ref'ing specified value in compute_va
  76435bf... csslookup: Remove tautological if expression
  2714fcd... cssanimatedstyle: Keep transition_info_add from recursing
  d8f0645... bitmask: Add _gtk_allocated_bitmask_to_string
  aee0e40... csslookup: Remove 'missing' bitmask
  97f5ccc... csslookup: Remove 'relevant' parameter from _init
  0b329fd... cssinitialvalue: Make _compute public
  a727939... cssstaticstyle: Compute initial/inherit values directly
  4d5d1b7... csscolorvalue: Remove unused new_from_rgba()

Commits added to the branch:

  752ffaf... cssrgbavalue: Add an opaque white singleton
  7999ebe... cssrgbavalue: Add & use new_white()
  d4657df... cssanimatedstyle: Avoid unnecessary transition work
  70e1421... cssanimatedstyle: Avoid type check in loop
  e8a2329... cssanimatedstyle: Save animation in array
  4173dbb... gtkprivate: Only define gtk_internal_return_if* for consist
  44a425e... cssimage: Use gtk_internal_return_val_*
  ef5b04e... cssanimatedstyle: Make set_animated_value transfer-full
  df1cceb... cssmatcher: Inline node values into matcher
  4efefa9... cssprovider: Fix compilation wth VERIFY_TREE set
  50abbac... cssstaticstyle: Avoid ref'ing specified value in compute_va
  72d7af7... csslookup: Remove tautological if expression
  e4ccdb4... cssanimatedstyle: Keep transition_info_add from recursing
  ee7e7fa... bitmask: Add _gtk_allocated_bitmask_to_string
  f75c81e... csslookup: Remove 'missing' bitmask
  6ea9d13... csslookup: Remove 'relevant' parameter from _init
  b2c39e9... cssinitialvalue: Make _compute public
  7de79af... cssstaticstyle: Compute initial/inherit values directly
  daa7547... csscolorvalue: Remove unused new_from_rgba()
  eef21df... csscolorvalue: return the initial color value directly