The compositor side wayland support enabling us to create textures from
wayland buffers needed updating since visuals were removed from the
wayland protocol.
This also fixes the #ifdef guards for the bind_wayland_display extension
in cogl-winsys-egl-feature-functions.h since it was mistakenly checking
that client-side wayland support had been enabled which won't be the
case.
Reviewed-by: Neil Roberts <neil@linux.intel.com>