Enable building VBoxGradd/gengradd.dll.
Introducing VBoxReplaceDll, a helper for replacing gengradd.dll when it's in use by the system.
Build VBoxMouse.sys.
**/Makefile.kmk: Cosmetic changes.
Adjustments for building OS/2 GAs.
Automated rebranding to Oracle copyright/license strings via filemuncher
Additions: whitespace cleanup
os2 additions: makefile hacking.