weston: Clip window title text to the frame
weston: Clip window title text to the frame

Fixes an issue with text overflowing the available frame space.

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