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

[Carlos Garnacho <carlosg 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:

  a8fe868... x11: Move focus sentinel to MetaX11Display
  923ab9a... core: Do not synchronize stack with Xserver if there is no 
  be528f9... core: Avoid grab transfer shenanigans with non-X11 backend
  e4a6fcf... core: Separate checks for pointer barriers availability
  49daf27... x11: Move X11 calls to map/unmap a MetaWindow to MetaWindow
  2033dcc... core: Relax requirement that MetaWindow shall have icon/min
  54e6e19... x11: Separate X11 focus handling into MetaX11Display method
  0c8c5c1... x11: Split X11 focus change requests to a separate function
  355cd1f... core: Untangle input focus management
  40a5f12... core: Add explicit init/shutdown_x11() MetaDisplay calls
  cc9b2b9... x11: Unmanage X11 windows on MetaX11Display finalization
  12ae316... x11: Initialize GdkDisplay together with MetaX11Display
  7f48a2e... wayland: Split Xwayland initialization in 2 steps
  d5aa073... x11: protect against null MetaX11Display when looking up X1
  3fdf77e... x11: Add meta_x11_get_display_name()
  5dee53b... wayland: Do not set DISPLAY environment variable on self
  32e8151... compositor: Drop error trap
  c1b7085... wayland: Drop error trap

Commits added to the branch:

  c2b0895... x11: Move focus sentinel to MetaX11Display
  f680cd6... core: Do not synchronize stack with Xserver if there is no 
  543b8ee... core: Avoid grab transfer shenanigans with non-X11 backend
  b8da69c... core: Separate checks for pointer barriers availability
  aaf2bad... x11: Move X11 calls to map/unmap a MetaWindow to MetaWindow
  693a7aa... core: Relax requirement that MetaWindow shall have icon/min
  1163474... x11: Separate X11 focus handling into MetaX11Display method
  961b809... x11: Split X11 focus change requests to a separate function
  a36520f... core: Untangle input focus management
  e7ab6e9... core: Add explicit init/shutdown_x11() MetaDisplay calls
  668bef7... x11: Unmanage X11 windows on MetaX11Display finalization
  e8d6410... x11: Initialize GdkDisplay together with MetaX11Display
  3f0dbfa... wayland: Split Xwayland initialization in 2 steps
  e1638e4... x11: protect against null MetaX11Display when looking up X1
  d25b420... x11: Add meta_x11_get_display_name()
  b6ff235... wayland: Do not set DISPLAY environment variable on self
  82e707a... compositor: Drop error trap
  e4cac90... wayland: Drop error trap