Nuke mutter-wayland and xwayland. xwayland will be part of upcoming xserver 1.16 and it isn't supported by mutter-wayland 3.12. mutter 3.14 merged mutter-wayland into same tarball and it supports xserver 1.16 just fine.
git-svn-id: svn://svn.linuxfromscratch.org/BLFS/branches/gnome@13447 af4574ff-66df-0310-9fd7-8a98e5e911e0
