Switch offset to double, jitter calculations for observation.

improve NTP accuracy

Impliment reach tracking

Persist servername and ip address, use persisted ip address if server name remains unchanged. TBD lookup server address again if reachability is bad.

Use new NTP Class

Last commit before removal

Add a TCP connect timeout and max connect attemps till we bail on TCP and stick with serial only.

removed unneeded include

Merge branch 'master' of github.com:liebman/AnalogClock

fixed the network logger port configuration