No Microsoft intellectual property was harmed in the production of
this code.

Some shuffling around of the image management code; this needs tidying up.

list.

Added FEATURE() macros to most relevant (non-driver) files.

and generate DHCP options to indicate features to DHCP server (and to
PXE NBPs).

iSCSI hack.

really ugly hack at present, but that doesn't hugely matter since I'm
aiming to change the interface to iSCSI devices anyway within the next
week.

etherboot.h is only now used by drivers that have not been updated to
the new API.

Kill off use of etherboot.h outside drivers/net.

SCSI interface not yet implemented.

implemented; should be done at some point.)

applied.

xfer_window() function, which can return a scalar rather than a
boolean.