Make accesses with wrong width also work as apparently real hardware allows them...

Make accesses with wrong width also work as apparently real hardware allows them when the fault is disabled.
Fix DMA register writes if target_phys_addr_t is 64-bit.
Make more functions static.
A timer hack to make PalmOS run in finite time (uses very short timer periods, much shorter than clocksource tick).
Re-calculate internal clock rates on start-up.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3527 c046a42c-6fe2-441c-8c8c-71466251a162