Unfortunately it's just the source diff. It needs to be applied to the hildon-desktop source. I can provide the libhildondesktop.so and hildon-desktop.launch binaries I'm using if you really want it but I'm refraining from providing deb files because the first time I built it, I built a hildon-desktop that wouldn't start (it was only on further investigation that I found that I'd - somehow - built it without maemo-launcher support) so I'm kinda wary