Toehold and login need to be separated in functionality, so one doesn't
depend on the other running.

We need to shut down X without a kill -9.

Kerberos information should be enough for creating password file info, home
directory.  .fullname, .shell (provide etcsh?)

getpw*: back to normal?  (Assume all logins are via our login and thus
have an entry put into the password file, using the usual add routines
stolen from mkpasswd and/or passwd).

login blockage when in use (stop inetd functions with a logged-in
version of inetd?)