[mutter] (6 commits) Non-fast-forward update to branch wip/carlosg/drop-caps

[Carlos Garnacho <carlosg src gnome org>]

The branch 'wip/carlosg/drop-caps' 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:

  f04e301... core: Drop all capabilities on initialization
  d93b156... core: Move unix signal handler later in the process
  01e2ed0... core: Set SCHED_RR by default on Wayland sessions
  c46a520... core: Set up EGL context creation thread before dropping ca
  f7c6742... backends: Drop rt-scheduler configuration key
  4a13153... backend/native: Use high priority contexts for secondary GP

Commits added to the branch:

  2901c8d... core: Drop all capabilities on initialization
  a8abfd9... core: Move unix signal handler later in the process
  ee5f066... core: Set SCHED_RR by default on Wayland sessions
  6c91502... core: Set up EGL context creation thread before dropping ca
  c876772... backends: Drop rt-scheduler configuration key
  8d2a07e... backend/native: Use high priority contexts for secondary GP