enable most of IA-32 specific code to be used in amd64 (resides in
directory lib/sysdep/x86_x64)
bits: add IsBitSet
remove mem_PageSize (use os_cpu_PageSize instead)
cpuid: change interface to allow gracefully supporting later
subfunctions that require input parameters
amd64_asm.asm: add amd64 implementation of cpuid
cpu: move functions provided by OS to sysdep/os_cpu.cpp
cpu topology: avoid trouble when process affinity is set by remapping
processor numbers to 0..PopulationCount(processAffinity)
topology.cpp: move ex-ia32 topology code here.
This was SVN commit r5945.