Copy in the topomap from the parent to the jail; to avoid each jail
trying to copy it via NFS. Add code to restart the tmcc proxy, which appears to die off for no apparent reason. I now waitpid for it while the jail is running, and restart if it exits. At Mike's suggestion temporarily wrap tmcc proxy in a ktrace to see if we can debug this problem. The ktrace file (using -a option) is written as /var/emulab/jails/nodeid/tmcc.ktrace.