VBoxPcBios: Use HLT while waiting for floppy interrupts. Added comment on seemingly missing 00440h updating in the int08_handler.
header (C) fixes
BIOS: Expanded PCI service, removed old 16-bit implementation.
BIOS: Updating PCI BIOS service.
Renamed PC/BIOS-new to PC/BIOS and dropped the VBOX_WITH_NEW_BIOS makefile variable.