tests: Test invoking closures built with wl_closure_vmarshal()
tests: Test invoking closures built with wl_closure_vmarshal()

mchalupa/wayland,abooij/wayland,bitfactor/wayland,bitfactor/wayland,eyolfson/wayland,abooij/wayland,tulcod/wayland,eyolfson/wayland,sir-murray/wayland,sir-murray/wayland,eyolfson/wayland,bitfactor/wayland,tulcod/wayland,abooij/wayland,tulcod/wayland,sir-murray/wayland,mchalupa/wayland,mchalupa/wayland