[9fans] new termrc

[geoff]

I've just pushed out a new (and I hope stable) /rc/bin/termrc
and /cfg/example/termrc.  Machine-specific configuration should
go into /cfg/$sysname/termrc.  If you don't use DHCP (i.e., you
statically configure terminal IP addresses), this affects you.
You'll probably want to look at the diffs in any case.