Make updatetime() try the allowed UDP ports (rather than hardcode one).
Make updatetime() try the allowed UDP ports (rather than hardcode one).

* Make the time library return getruntime() if no NTP server can be
reached. Make logmsg() use time.time_getunixtime().
* Correct the usage string and "Starting" log message.

BuildSeash/affix-repo,BuildSeash/affix,SeattleTestbed/affix