Merge branches 'x86/acpi', 'x86/apic', 'x86/cpudetect', 'x86/headers',...

Merge branches 'x86/acpi', 'x86/apic', 'x86/cpudetect', 'x86/headers', 'x86/paravirt', 'x86/urgent' and 'x86/xen'; commit 'v2.6.29-rc5' into x86/core