[gtk/matthiasc/for-master] (9 commits) ...gtk-demo: Fix breakage in a css demo

[Matthias Clasen <matthiasc src gnome org>]

Summary of changes:

  2ce8c82... window: Fix tiled style class names (*)
  f5f4c3c... Merge branch 'wip/exalm/window-polish' into 'master' (*)
  c4607f7... Merge branch 'matthiasc/for-master' into 'master' (*)
  1aa86d2... gl renderer: Fix blurred outset shadow slicing (*)
  aaed61d... gtk-demo: Plug a leak
  3f6dd34... gtk-demo: Plug another leak
  98178d8... gtk-demo: Plug another leak
  96c0fbf... gtk-demo: Plug another leak
  8f5444c... gtk-demo: Fix breakage in a css demo

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