[gtk] (23 commits) ...Merge branch 'matthiasc/atspi-child' into 'master'

[Matthias Clasen <matthiasc src gnome org>]

Summary of changes:

  fbb08a3... a11y: Add child state change to GtkATContext (*)
  8d46bd1... a11y: Notify of changes in the children list (*)
  f1e14c4... a11y: Implement ChildrenChanged atspi.Event (*)
  698cbee... a11y: Move ChildrenChanged emitter to ATSPI utilities (*)
  e45dd77... a11y: Emit ChildrenChanged for toplevel list changes (*)
  1d80288... stack: Change ordering for removal (*)
  a11ab6c... a11y: Handle stack case for addition/removal (*)
  5b2b2fe... a11y: Fix up state / change enum confusion (*)
  1e13acb... widget: Don't add reordered children (*)
  374a451... a11y: Don't present HIDDEN accessibles (*)
  b12992c... a11y: Handle HIDDEN state changes (*)
  46e754a... a11y: Skip non-presented children when required (*)
  e7b290d... a11y: Improve child notification for toplevels (*)
  89a8c89... a11y: Improve child index helpers (*)
  274f9ad... a11y: Emit child notification when toplevels get hidden (*)
  bba6d60... window: Maintain accessible HIDDEN state (*)
  2546b88... a11y: Redo child-added/-removed for toplevels (*)
  434b145... stack: Don't transition when the visible child is remove (*)
  7c10657... Cosmetics (*)
  9a943e2... stack: Update HIDDEN a11y state for stack pages (*)
  8ffb398... a11y: Handle all cases for state change (*)
  adb7676... a11y: More State<>Change confusion (*)
  8df883e... Merge branch 'matthiasc/atspi-child' into 'master'

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