clients: Update .gitignore for weston-multi-resource
clients: Update .gitignore for weston-multi-resource

Signed-off-by: Stefan Schmidt <30b9c4f094c892e5b20349164e275524094ed7be@samsung.com>

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