[PATCH] X86-64 merge

[PATCH] X86-64 merge

At least one of them is critical. It fixes an path in the IOMMU that
I broke with the ealier "fullflush" workaround.

 - Check for ~/bin/installkernel like i386 (M. Bligh)
 - Implement 32bit RTC_IRQ_SET correctly (Lutz Vieweg)
 - Disable some useless printks in 32bit emulation
 - Warning fixes for mixed C99 style declarations/statements.
 - Sync lAPIC power management with i386
 - Use topology sysfs like i386
 - Fix some serious bugs in the MCE handler. ECC should
   be decoded correctly now.
 - Add oops=panic option to panic on Oopses.
 - Fix hackish code in head.S
 - Add missing options in IOMMU
 - Fix _syscall6 (Olaf Hering)
 - Remove broken ACPI locking code. Port IA64 C version.
 - Make safe_smp_processor_id() more reliable
 - Read HPET in vsyscall code
 - Add workaround for BIOS that corrupt 64bit registers in HLT
 - Fix unaligned access in bitops.h
 - Remove broken ntp drift correction code for now
 - i386 merge in SCI setup
 - Fix wrong offset in callin.h (Jim Houston)
 - Minor comment fixes