compositor-wayland: Properly handle running inside a compositor that does not provide keymaps
compositor-wayland: Properly handle running inside a compositor that does not provide keymaps

Signed-off-by: Jason Ekstrand <68c46a606457643eab92053c1c05574abb26f861@jlekstrand.net>

udoprog/weston,Fantu/compositor-spice,kwm81/weston,sir-murray/weston,Fantu/compositor-spice,Tarnyko/weston-xdg_surface_present,Gnurou/weston,mchalupa/weston,xorgy/weston,eyolfson/weston,xorgy/weston,sir-murray/weston,mchalupa/weston,eyolfson/weston,giucam/weston,kwm81/weston,krezovic/weston,Gnurou/weston,krezovic/weston,Tarnyko/weston-xdg_surface_present,Fantu/compositor-spice,udoprog/weston,jonnylamb/weston,jonnylamb/weston,giucam/weston