[gtk] (16 commits) ...Merge branch 'wip/xdg-popup-async-relayout' into 'master'

[Benjamin Otte <otte src gnome org>]

Summary of changes:

  f43717a... popover: Unrealize when autohide prop changes
  6eaeadb... tests/popover: Add check box for switching autohide prop
  4e78dd2... gdk/surface: Use enum type for surface type
  f284e1d... wayland: Remove position method split
  0d08687... gdk/wayland/surface: Use dedicated bool for frame callback 
  7fafa51... wayland/surface: Add per surface configuration event queues
  49fcbc2... wayland: Remove old "gdk-attached-grab-surface" hackery
  2bb0edd... wayland: Simplify popup parent discovery
  4069341... x11: Make gdk_surface_get_position() return relative positi
  339a04d... gdk: Move GdkGravity to gdktypes.h
  ebd3ee9... gdk: Move GdkGeometry declaration to gdktypes.h
  11dbc38... wayland: Fix top-most-popup check
  46d40cd... wayland: Simplify logic deciding whether to use xdg_popup
  37f4c64... gdk/surface: Reset position after hiding
  ca71119... gdk/surface: Replace move_to_rect() with GdkPopupLayout bas
  9660ae5... Merge branch 'wip/xdg-popup-async-relayout' into 'master'