wayland: Add support for wayland-scanner 1.10
wayland-scanner 1.10 and above use a new symbol, wl_proxy_marshal_constructor_versioned, which also needs to be caught and redirected by the wrapper.
The implementation could be a bit better, by checking the version of wayland-scanner through pkg-config, but couldn't see a way to do that (cmake is completely alien to me, and I gave up on the documentation after some time).
Fixes waffle-gl/waffle#38.