[sugar] Keybindings configuration

[Marco Pesenti Gritti]

Hey,

we need our own matchbox's kdbconfig on the laptop, to configure sugar 
specific keybindings.

One way to do this would be to apply a patch to matchbox in the rpm. 
Though I think we really want to avoid rpm specific patches. We want to 
be easy to build and run sugar on all distribution for development.

I thought a bit about it and discussed with Dan. We think the best 
solution would be probably to add a  --kbdconfig-file option to 
matchbox. That way we would just distribute our kbdconfig with sugar and 
run matchbox with --kbdconfig-file.

Matthew, what do you think?

Marco