On long-lived systems, I sometimes want to look at the kernel boot
messages but find that the message buffer has long since scrolled
past what I wanted to see.  FreeBSD keeps a copy of the boot messages
in /var/run/dmesg.boot, and I think it's a good idea.  I could just
add it to rc.local, but it seems like it would be something generally
useful.  Will someone commit this to /etc/rc?

146a147,149
> # save a copy of the boot messages
> /sbin/dmesg > /var/run/dmesg.boot
>