[gtk] (16 commits) ...Merge branch 'matthiasc/for-master' into 'master'

[Matthias Clasen <matthiasc src gnome org>]

Summary of changes:

  5f9bcd0... accelgroup: Expand translator comment (*)
  7fb5b97... gdk: Drop GDK_PARENT_RELATIVE (*)
  efbc661... window: Drop an unused field (*)
  105fc16... testsuite: Drop the type-hint property from tests (*)
  0553b10... gdk: Drop the GdkSurfaceTypeHint enum (*)
  f27d855... gdk: Drop the GdkEventMask enum (*)
  e143221... gdk: Drop the GdkByteOrder enum (*)
  e5a9255... gdk: Move the GdkGeometry typedef to gdkinternals.h (*)
  9c82946... docs: Drop a mention of gdk_window_move() (*)
  aa0d0dc... gdk: Drop _gdk_windowing_args (*)
  3468b2f... gdk: Clean up gdkinternals.h (*)
  a20291f... gdk: Drop some unused event queue functions (*)
  45f162f... gdk: Remove an unused texture api (*)
  c47553e... gdk: Drop no-longer-used documentation (*)
  646a1c2... win32: Drop an unsed variable (*)
  9f4da7d... Merge branch 'matthiasc/for-master' into 'master'

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