header (C) fixes
Automated rebranding to Oracle copyright/license strings via filemuncher
ASMAtomicCmpXchgU64.asm,ASMAtomicReadU64.asm: Quickly hacked up some 64-bit code (untested).
iprt/common/asm: id tag + docs.
GCC 4.3.3 workarounds for ASMAtomicCmpXchgU64 and ASMAtomicReadU64.