header (C) fixes
*: spelling fixes, thanks Timeless!
Automated rebranding to Oracle copyright/license strings via filemuncher
ASMAtomicCmpXchgU8.asm: r8b not r8l.
iprt/asm.h: Adding ASMAtomicCmpXchgU8, ASMAtomicCmpXchgS8 and ASMAtomicCmpXchgBool.