This boots dom0 and domU on an rx2600.
Revert several files that were accidentally reverted by the merge-ups
(that weren't fixed by cset 8743). Those are included here with the
2.6.15 patch re-applied as well as changes between 2.6.15 and 2.6.16-rc2.
Specifically, these are pal.h, processor.h and system.h.
This patch also reverts changes to include/asm-ia64/hypercall.h and
hypervisor.h from cset 8742.
Signed-off-by: Alex Williamson <alex.williamson@hp.com>