really doesn't make any sense, what was I smoking) and allow
the more canonical usage of "any" for either side of the comparison
for release name or architecture (meaning you can also set CD_VERSION=any
in a cdrom.inf file to cause sysinstall to always match it and likewise
with the architecture, if specified).
Sensibly suggested by: Makoto MATSUSHITA <matusita@jp.FreeBSD.org>