I've put a GENERIC NetBSD 1.3 kernel with the patch at
ftp://ftp.macbsd.com/pub/outgoing/khym/GENERIC+mrz.tgz

As I'm running NetBSD-current on my system, I haven't really been able
to test it. Also, my Mac is an AV Mac, which doesn't use the patch. The
kernel boots into single-user mode for me though.
-- 
Name: Dave Huang     |   Mammal, mammal / their names are called /
INet: khym@bga.com   |   they raise a paw / the bat, the cat /
FurryMUCK: Dahan     |   dolphin and dog / koala bear and hog -- TMBG
Dahan: Hani G Y+C 22 Y++ L+++ W- C++ T++ A+ E+ S++ V++ F- Q+++ P+ B+ PA+ PL++