[mutter] (6 commits) Non-fast-forward update to branch gbsneto/installed-tests

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

The branch 'gbsneto/installed-tests' 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:

  9ce7ce0... cogl/tests: Use temp log file when .log isn't writable
  fb59671... Add Meson support for installed tests
  ad8cc8e... meta/tests: Remove commented lines
  8c86a51... meson: Print some configure flags

Commits added to the branch:

  6502735... cogl: Remove mesa_46631_slow_read_pixels_workaround (*)
  981b045... cogl: Pick glReadPixels format by target, not source (*)
  05ab8ee... cogl/tests: Use tmp file to dump test results
  dd6865c... Add Meson support for installed tests
  b56e238... meta/tests: Remove commented lines
  7b7ced8... meson: Print some configure flags

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