[gtk] (7 commits) Non-fast-forward update to branch wip/otte/css

[Benjamin Otte <otte src gnome org>]

The branch 'wip/otte/css' 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:

  6756b83... stylecontext: Remove the "changed" signal
  2e17d07... testsuite: Remove the stylecontext test
  cf73cee... stylecontext: Remove gtk_style_context_new()
  348ea74... style context: Remove parent relationship
  b9f0c54... css: Remove unused function
  06aeae5... css: Make some local variables const

Commits added to the branch:

  db9730b... stylecontext: Remove the "changed" signal
  b9c880f... testsuite: Remove the stylecontext test
  31713ab... stylecontext: Remove gtk_style_context_new()
  416182a... style context: Remove parent relationship
  98b42f6... css: Remove unused function
  b75d408... css: Make some local variables const
  fcb08a2... stylecontext: Remove unused typedef