header (C) fixes
Automated rebranding to Oracle copyright/license strings via filemuncher
Linux HostDrivers/Additions: fixed missing symbol ''RTMemAllocZVar()''; rebranding
Rebranding: Linux modules
Additions: tabs -> spaces.
Additions/Linux/vboxvideo_drm: get the PCI Id right
Additions/linux: added a drm driver for OpenGl support