[gtk] (13 commits) ...Merge branch 'wip/otte/gdk-headers' into 'master'

[Benjamin Otte <otte src gnome org>]

Summary of changes:

  d61c71c... macos: Actually set the vfuncs (*)
  78d7cb7... gdk: Remove gdk.h include from gdk-private.h (*)
  39f2bb2... gdk: Remove gdk.h include from header (*)
  c799288... gdk: Remove gdk.h include form gdkframeclockidle.c (*)
  811b5d9... gdk: Don't include gdkinternals.h in gdk-private.h (*)
  bcd9a01... broadway: Don't include gdkinternals.h (*)
  226ecaf... win32: Don't include gdkinternals.h (*)
  4e83649... macos: Don't include gdkinternals.h (*)
  47e0539... x11: Don't include gdkinternals.h (*)
  d4f9d38... win32: Fix gcc warnings (*)
  279f9aa... wayland: Don't include gdkinternals.h (*)
  a294745... gdk: Remove gdkinternals.h (*)
  5559937... Merge branch 'wip/otte/gdk-headers' into 'master'

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