if/when the property "timestamper.enabled" is set, the timestamper will query the sntp server(s) and update the clock accordingly
if/when it is not set (or set to something other than "true"), it will pause with its standard delay before checking again
in addition, it has a guard to help running the timestamper multiple times in the same JVM
(this is what caused the runtime errors on sun jvms but not on kaffe)
((aka i slacked and didn't test sufficiently. off with my head))
this now builds and runs fine in sun 1.3-1.5 jvms, as well as kaffe
