91cdfab495
In the wayland branch of mutter, we want to build a wayland version of the mutter libraries, and that's much easier if we just build wayland support unconditionally. The define is kept to avoid a huge diff, but should be removed in a later patch. Also, wayland support can still be disable at runtime, by launching mutter without the --nested switch. https://bugzilla.gnome.org/show_bug.cgi?id=705497
