[mutter] (7 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:

  c15fcf6... cogl: Defer EGLContext creation to a separate thread
  f53e869... core: Move unix signal handler later in the process
  4d04158... core: Set SCHED_RR by default on Wayland sessions
  5a4e475... core: Set up EGL context creation thread before dropping ca
  506d10c... core: Drop all capabilities on initialization
  75f72e4... backends: Drop rt-scheduler configuration key
  22aac2f... backend/native: Use high priority contexts for secondary GP

Commits added to the branch:

  a335e2a... cogl: Defer EGLContext creation to a separate thread
  8bec944... core: Move unix signal handler later in the process
  0b52ce8... core: Set SCHED_RR by default on Wayland sessions
  c5f632d... core: Set up EGL context creation thread before dropping ca
  ffa1918... core: Drop all capabilities on initialization
  1a0e366... backends: Drop rt-scheduler configuration key
  beb31a5... backend/native: Use high priority contexts for secondary GP