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>

The global absolute symbol STACK_TOP defined in layout.inc can be used
by the linker script as well as by anything else that needs to know
where the stack is.  Also document why we do it differently for
PXELINUX.

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