Merge commit 'v2.6.30-rc5' into x86/apic

Merge reason: this branch was on a .30-rc2 base - sync it up with
              all the latest fixes.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --cc Documentation/kernel-parameters.txt
Simple merge

diff --cc arch/x86/Kconfig
Simple merge

diff --cc arch/x86/kernel/apic/io_apic.c
Simple merge

diff --cc arch/x86/kernel/apic/x2apic_uv_x.c
Simple merge