[mutter] (21 commits) Non-fast-forward update to branch wip/carlosg/unassorted-perf-fixes

[Carlos Garnacho <carlosg src gnome org>]

The branch 'wip/carlosg/unassorted-perf-fixes' 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:

  08758bd... clutter: Avoid rounding compensation when invalidating 2D a
  b4fa671... compositor: Avoid changing pipeline/source if shadow is not
  e1d27d5... cogl: Ensure to only clear the depth buffer if depth testin
  1a407d0... Revert "Revert "ClutterActor: Optimize away idempotent scal

Commits added to the branch:

  efd9f86... Dockerfile: Install gsettings-desktop-schemas rpm built fro (*)
  b34bb77... tests: Don't show 'core dumped' messages (*)
  8e9184b... background: Mipmap wallpaper when shrinking (*)
  bdf8d0f... compositor: improve vignette on background actor (*)
  8d51409... cursor-renderer-native: Floor the cursor position instead o (*)
  149e4d6... monitor-manager: Don't use switch-config when ensuring conf (*)
  f64eba5... screen-cast-src: Add VideoCrop support (*)
  20c9ca2... screen-cast: Add screen-cast-window interface (*)
  9319345... window-actor: Implement MetaScreenCastWindow interface (*)
  dbe7279... screen-cast-session: Add screen-cast window mode (*)
  ec25f3a... screen-cast-session: Add support for RecordWindow (*)
  bbcb66d... window: Add window id (*)
  c786b6c... screen-cast-session: Add window-id support (*)
  7a5e0c7... window: Expose the client type in the API (*)
  781ec74... window: Fix introspection warnings (*)
  49c2be4... Replace Bugzilla by Gitlab URL in DOAP file (*)
  9f3d321... input-settings: treat a serial of 1 as serial of 0 (*)
  6c9f7e1... clutter: Avoid rounding compensation when invalidating 2D a
  6ec6729... compositor: Avoid changing pipeline/source if shadow is not
  29a1288... cogl: Ensure to only clear the depth buffer if depth testin
  517ec28... Revert "Revert "ClutterActor: Optimize away idempotent scal

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