[mutter] (21 commits) Non-fast-forward update to branch bilelmoussaoui/meson-without-x11

[Bilal Elmoussaoui <bilelmoussaoui src gnome org>]

The branch 'bilelmoussaoui/meson-without-x11' 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:

  e813f41... meson: Split x11 option into backend/xwayland
  5433d50... cogl: Fix build without X11
  5bf58c4... cogl: Unify HAS_X11/HAS_XLIB build configs
  a072817... build: Make GLX dependent on X11
  d5e14cb... build: Add X11/XWayland config options

Commits added to the branch:

  c861101... backend: Check if the gsettings scheme exists (*)
  bf95f27... build: Mark gnome-settings-daemon as optional (*)
  75ec279... wayland/buffer: Only query Wayland EGL buffer if display bo (*)
  9c8948f... window-actor: Add API to get the surface actor candidate fo (*)
  dc43bb9... window-actor/x11: Don't use direct scanout if the window is (*)
  54ba64b... window-actor/wayland: Only use scanout for opaque non-fulls (*)
  0bc142e... compositor: Split out a function to update the topmost wind (*)
  bb76d6f... compositor: Update topmost window actor after visibility ch (*)
  11bc19f... wayland: Drop xdg-shell v6 protocol (*)
  d4bdd8b... wayland: Remove Gtk primary selection protocol (*)
  b0a9853... Update Nepali translation (*)
  f493a78... display: Fix typo in trace message (*)
  2a3c964... display: Add method to flush a single window from the queue (*)
  b289c8f... window: Ensure window-visibility-updated is emitted when fl (*)
  bc9762e... display: Properly store later ID when adding window to queu (*)
  b27234c... startup/x11: Fix compiling without startup-notification (*)
  b4bba8a... meson: Split x11 option into backend/xwayland
  d90c6fa... cogl: Fix build without X11
  cc0eff8... cogl: Unify HAS_X11/HAS_XLIB build configs
  9783779... build: Make GLX dependent on X11
  5920de4... build: Add X11/XWayland config options

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