Touch events

[Bill Spitzak]

It seems like it would be better if clients got the touch events first, 
and the compositor only did things if the client said it was 
uninterested in the events. For a lot of touch events this can be 
decided immediately on the touch-down, since the client knows the user 
is pushing nothing.

I don't know much about touch events, but this seems similar to global 
shortcuts. It would help a lot if every keystroke was sent to clients 
but the clients could say "I don't do anything with that" and then the 
compositor/shell could use the keystroke as a global shortcut, and in 
fact I thought this was what Wayland was going to do. It seems the same 
ideas should apply to other events like touch.