header (C) fixes
IPRT: Added RTBldCfgCompiler.
IPRT: Added RTBldCfgTarget, RTBldCfgTargetArch, RTBldCfgTargetDotArch and RTBldCfgType.
Automated rebranding to Oracle copyright/license strings via filemuncher
IPRT: Added a RTBldCfg API group for stuffing away the SVN_REV and version of the product IPRT is used by.