[gtk+/quartz-integration] (21 commits) ...Merge branch 'master' into quartz-integration

[John Ralls <jralls src gnome org>]

Summary of changes:

  012bc98... Fixed gtk_recent_chooser_menu_set_current_filter to update  (*)
  03df034... Remove latest bits of GtkItemFactory (*)
  272aa7b... XI2: don't translate button releases as scroll events (*)
  9ba009a... Remove debug spew (*)
  08f90b7... Add translation entries for more common keysyms (*)
  b678393... Strip XF86 prefix from untranslated keysyms (*)
  9a77089... Add an English translation (*)
  3cb758a... Add an empty English translation for properties (*)
  4960a81... Updated Arabic translation (*)
  2c352f5... Share code to fill GdkEventKey.string (*)
  d4c1dbe... Pass group state to _gdk_x11_device_xi2_translate_state (*)
  eaba2cd... XI2: translate group state back into core state (*)
  3c1ff82... Fix a memory leak in GtkCSSProvider (*)
  2b2e607... Improve GtkApplication migration guide (*)
  4dc9b29... Don't assume a screen exists before realize() (*)
  5f04bf6... Simple test for display-less widget creation (*)
  8f870dd... gtk-demo: Use symbolic icon that exists (*)
  19092fe... Add a testcase for cell positions (*)
  ab66ac5... Migration guide additions (*)
  ceeb50b... Don't leak a cell area context (*)
  c76194b... Merge branch 'master' into quartz-integration

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