Add vnconfig fixes that Mike told me about a long time ago, and I
totally forgot about (vnconfig does not return error status when a vn device is busy). This was casuing the crashes. Add a local only kludge to NFS mount /user and /proj into the jails. I hate this. Should be using SFS, but without an agent thats not really possible. Add sshdport config setup from jailconfig. Look for that in the jail config file and pass to jail.