[mutter] (5 commits) Non-fast-forward update to branch wip/carlosg/drop-external-keyboard-detection

[Florian Müllner <fmuellner src gnome org>]

The branch 'wip/carlosg/drop-external-keyboard-detection' 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:

  48e9f71... backends/native: Drop external keyboard detection for ::tou

Commits added to the branch:

  0b6a316... clutter/text: Also queue relayout if the actor has no valid (*)
  c3bf10d... cogl test-premult: Don't free texture data until CoglBitmap (*)
  a3cc62c... cogl tests: Force defined behaviour for 24-bit left-shifts (*)
  38bbd95... backends/x11: Implement ClutterSeat::touch-mode for the X11 (*)
  f8e2234... backends/native: Drop external keyboard detection for ::tou

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