UEFI Progress Update

There is still a need to add support for serial debugging, and expanding the disk system support; but, with a few minor tweaks, a test build has even managed to boot all the way to the desktop on my Macbook Air. Unfortunately, Haiku then promptly freezes, hence the need for serial debugging. But we're edging closer to UEFI support on actual hardware. We may even manage to squeeze it into the upcoming beta release *fingers crossed*