[mutter] (15 commits) Non-fast-forward update to branch gbsneto/tracing

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

The branch 'gbsneto/tracing' 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:

  99dc947... cogl: Add libsysprof capture based tracing
  cba6343... clutter: Add some preliminary tracing to clutter
  98fe693... profile: Add a Sysprof-based profiler
  b54371b... cogl-trace: Cleanup context after disabling
  c2e9f37... profiler: Support setting output filename
  a0401c4... clutter: Add more descriptive profiling sections
  e07e8b9... cogl/trace: Add user-visible group name
  378f8e6... ci: Add sysprof3 to the Docker image
  7a3dc45... clutter/stage-cogl: Simplify redraw function

Commits added to the branch:

  a859d76... meson: Cleanup debug build handling (*)
  75e2bfb... meson: Do not add compiler flags if 'plain' buildtype is us (*)
  b3e19ee... wayland: Unset DnD selection on wl_data_offer destruction (*)
  bbfaf82... wayland: Honor startup sequence workspace on .request_focus (*)
  e2bea48... display: Emit 'grab-op-end' signal after ungrab happened (*)
  60170cf... compositor: Emit 'grab-op-end' signal after ungrab happened (*)
  aeca01f... cogl: Add libsysprof capture based tracing
  e679b18... clutter: Add some preliminary tracing to clutter
  c334007... profile: Add a Sysprof-based profiler
  22624c6... cogl-trace: Cleanup context after disabling
  b961e05... profiler: Support setting output filename
  1681aa1... clutter: Add more descriptive profiling sections
  77b83e4... cogl/trace: Add user-visible group name
  a778b3f... ci: Add sysprof3 to the Docker image
  7c4fc6c... clutter/stage-cogl: Simplify redraw function

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