compositor-x11: Set the name field on weston_outputs
compositor-x11: Set the name field on weston_outputs

That way log messages referencing the output are more informative.

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