[mutter] (26 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:

  e45da40... x11: Move focus sentinel to MetaX11Display
  d86e8d0... core: Do not synchronize stack with Xserver if there is no 
  a392638... core: Avoid grab transfer shenanigans with non-X11 backend
  3360bbd... core: Separate checks for pointer barriers availability
  8ecebe5... x11: Move X11 calls to map/unmap a MetaWindow to MetaWindow
  b77cd6e... core: Relax requirement that MetaWindow shall have icon/min
  e5b9434... x11: Separate X11 focus handling into MetaX11Display method
  6a4aa4c... x11: Split X11 focus change requests to a separate function
  8cdce2d... core: Untangle input focus management
  6dfd969... core: Add explicit init/shutdown_x11() MetaDisplay calls
  623675d... x11: Unmanage X11 windows on MetaX11Display finalization
  7baa2da... x11: Initialize GdkDisplay together with MetaX11Display
  af9c9da... wayland: Split Xwayland initialization in 2 steps
  faa83fa... x11: protect against null MetaX11Display when looking up X1
  6d90bc6... x11: Add meta_x11_get_display_name()
  436f74e... wayland: Do not set DISPLAY environment variable on self
  b610927... compositor: Drop error trap
  b80269e... wayland: Drop error trap

Commits added to the branch:

  5480a3f... Update POTFILES.in (*)
  ac15a8a... Updated Spanish translation (*)
  ae6d9e3... backends: Fallback to builtin panel for devices where all h (*)
  3468144... ci: Build GNOME Shell at the test stage (*)
  160d2d5... ci: Install to Mutter and GNOME Shell to /usr (*)
  da1e917... ci: Add GNOME Shell dependencies to Dockerfile (*)
  b4d973f... ci: Update gsettings-desktop-schema URLs (*)
  3ffc4f8... ci: Use mutter image to build GNOME Shell (*)
  6a89e79... Update Friulian translation (*)
  bf8bc65... core: Check environment variables before giving to GAppLaun (*)
  454651f... Update Indonesian translation (*)
  917f272... x11: Move focus sentinel to MetaX11Display
  3f7b8dc... core: Turn MetaStack into a GObject
  811e30e... x11: Add MetaX11Stack object
  65d20d3... core: Avoid grab transfer shenanigans with non-X11 backend
  e396687... core: Separate checks for pointer barriers availability
  7d9b203... x11: Move X11 calls to map/unmap a MetaWindow to MetaWindow
  83487b5... core: Relax requirement that MetaWindow shall have icon/min
  a130218... x11: Separate X11 focus handling into MetaX11Display method
  9caa2da... core: Untangle input focus management
  50afc9c... core: Add explicit init/shutdown_x11() MetaDisplay calls
  72f928f... x11: Unmanage X11 windows on MetaX11Display finalization
  e656157... x11: Initialize GdkDisplay together with MetaX11Display
  ec77c57... wayland: Split Xwayland initialization in 2 steps
  e8fb93a... compositor: Drop error trap
  eb67536... wayland: Drop error trap

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