Revert "compositor-x11: Move the x11 event handler to the display loop"
Revert "compositor-x11: Move the x11 event handler to the display loop"

This reverts commit 6deb09ef8a72164947cdfa5f2414e292c7672c9c.

(Derek says he has an improved version in the works.)

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