Use libpci to access PCI config space.  This *hopefully* will make it
less likely that some old machine hangs when failing to set the
requested video mode.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

Move copybs to dosutil, change the Makefile to deal with UPX being
able to compress (e.g. very small files.)

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

It's perfectly legitimate to have a bigger FAT area than is needed,
and it is often done for alignment.  Tell mtools not to throw a hissy
fit over it.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

Add an option to update the in-memory version of FAT/NTFS hidden
sectors (== partition offset); load the boot sector for NTLDR.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

Disable some debugging code that was never intended for production
use.  The intent is to track down specific memory-clobbering bugs.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>