(a) use static-network-up, since it is more generic than the started networking event
(b) do not hook into network deconfiguration to speed up shutdown
(c) expect fork, per the use of the "-f" option
(d) use a variable for the run directory to make changing it simpler
(e) handle the situation of a left over socket file
(f) use the -f option to be able to track the PID
No longer directly exec the server, do not remove the PID file because it is unnecessary to do so. No longer respawns because Upstart can not track the process with the starter command.