Local APIC

- local APIC timer used as the source of time

- PIC is still used as the hw interrupt controller as we don't have
  enough info without ACPI or MPS to set up IO APICs

- remapping of APIC when switching paging on, uses the new mechanism
  to tell VM what phys areas to map in kernel's virtual space

- one more step to SMP

based on code by Arun C.

lib/i386/misc/_cpufeature.c

@@ -27,6 +27,10 @@ int _cpufeature(int cpufeature)
 			return cpuid_feature_edx & CPUID1_EDX_PSE;
 		case _CPUF_I386_PGE:
 			return cpuid_feature_edx & CPUID1_EDX_PGE;
+		case _CPUF_I386_APIC_ON_CHIP:
+			return cpuid_feature_edx & CPUID1_EDX_APIC_ON_CHIP;
+		case _CPUF_I386_TSC:
+			return cpuid_feature_edx & CPUID1_EDX_TSC;
 	}
 
 	return 0;