it isn't being integrated into 'make release' because for the forseeable
future the memstick images will be identical to what's on the DVD except
for which package set is provided. If/when what's on the memstick diverges
from what's on the DVD it would make more sense to generate a "memstick"
directory in $CHROOT/R/cdrom and build the memstick image along with the
ISO images.
Reviewed by: jhb, ru, Garrett Cooper (yanefbsd at gmail dot com)