[iPAQ] Imlib branch

Hello fellow hackers,

Buried deep in the bowels of the GNOME CVS, I have placed some code
into imlib to handle the iPAQ 12 bit display. It also has some
caching issues cleaned up w.r.t. autogenerated data. Please test
on the iPAQ (it works with my emualtor), and with other, regular apps.

I hope to merge this code back into HEAD after it get's some hammering.
Branch name is IPAQ_BRANCH.

Have fun,
Mark Crichton