header (C) fixes
IPRT: -Wunused-parameter.
*: spelling fixes, thanks Timeless!
Automated rebranding to Oracle copyright/license strings via filemuncher
IPRT,HostDrv,AddDrv: Export public IPRT symbols for the linux kernel (pain).
iprt: splitting out some log stuff from log.cpp so we can avoid some APIs that includes the ellipsis between VBoxDrv and the dynamically loaded code (VMMR0.r0 and friends).