[mutter] (8 commits) Non-fast-forward update to branch wip/nielsdg/add-yuv-support-gnome-3-32

[Niels De Graef <nielsdg src gnome org>]

The branch 'wip/nielsdg/add-yuv-support-gnome-3-32' 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:

  7cbcef4... WIP: wayland: add basic support for non-RGBA textures
  8d833c5... cogl: fix rename of cogl-colorspace-conversion to cogl-pixe

Commits added to the branch:

  3fdc651... cursor-renderer-native: Free MetaCursorNativePrivate struct (*)
  15803b9... wayland-seat: Use g_free to cleanup MetaWaylandSeat (*)
  18e44bb... cogl/pipeline: Don't try to access to free'd pointer data (*)
  30d6e3a... clutter-text: Fix selection color drawing (*)
  13a1624... cogl-path: Undeprecate framebuffer functions (*)
  69cebc2... cogl: Put CoglPixelFormat code into its own file
  d3ed857... cogl: Map CoglPixelFormats to their specific properties
  3d8118c... WIP: wayland: add basic support for non-RGBA textures

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