[HEADS UP] "freebsd-update rollback" broken on minor version upgrades

[Colin Percival]

A quick heads-up to everyone here using my new FreeBSD Update "upgrade"
code: If you have performed a minor version upgrade (e.g., 6.2-RELEASE ->
6.3-BETA1 or 7.0-BETA1.5 -> 7.0-BETA2) please do not attempt to roll it
back using "freebsd-update rollback".

That code is currently broken and will make your system unbootable.  I
should have this fixed within the next couple of days.

Colin Percival