[mutter] (18 commits) Non-fast-forward update to branch wip/carlosg/x11less-preparations

[Jonas Ådahl <jadahl src gnome org>]

The branch 'wip/carlosg/x11less-preparations' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  d90496a... x11: Move focus sentinel to MetaX11Display
  eb63e19... core: Turn MetaStack into a GObject
  6e6ab55... x11: Add MetaX11Stack object
  9d67d08... core: Avoid grab transfer shenanigans with non-X11 backend
  81977ee... core: Separate checks for pointer barriers availability
  b8e6e74... x11: Move X11 calls to map/unmap a MetaWindow to MetaWindow
  1aaa700... core: Relax requirement that MetaWindow shall have icon/min
  4742b29... x11: Separate X11 focus handling into MetaX11Display method
  cb89ea1... core: Untangle input focus management
  5bd262e... core: Add explicit init/shutdown_x11() MetaDisplay calls
  c264927... x11: Unmanage X11 windows on MetaX11Display finalization
  25be690... x11: Initialize GdkDisplay together with MetaX11Display
  6d2a4eb... wayland: Split Xwayland initialization in 2 steps
  eeb4336... compositor: Drop error trap
  66ddeff... wayland: Drop error trap
  fd7829c... wayland: Drop -terminate argument to Xwayland

Commits added to the branch:

  b01edc2... backends/x11: Do not reload keymap on new keyboard notifica (*)
  439afb3... window: Move all attached windows with parent (*)
  0200f4f... x11: Move focus sentinel to MetaX11Display
  39bac6e... core: Turn MetaStack into a GObject
  ef074ea... x11: Add MetaX11Stack object
  103c469... core: Avoid grab transfer shenanigans with non-X11 backend
  dbe6e01... core: Separate checks for pointer barriers availability
  5e0523c... x11: Move X11 calls to map/unmap a MetaWindow to MetaWindow
  2f21710... core: Relax requirement that MetaWindow shall have icon/min
  1d77641... x11: Separate X11 focus handling into MetaX11Display method
  86de79c... core: Untangle input focus management
  465e131... core: Add explicit init/shutdown_x11() MetaDisplay calls
  7713006... x11: Unmanage X11 windows on MetaX11Display finalization
  1cf4279... x11: Initialize GdkDisplay together with MetaX11Display
  430f354... wayland: Split Xwayland initialization in 2 steps
  38432da... compositor: Drop error trap
  ea9d8a8... wayland: Drop error trap
  b1ea768... wayland: Drop -terminate argument to Xwayland

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