Github user afs commented on the issue:
https://github.com/apache/jena/pull/379
Added zero. I split one mega test (`testDateTime`) into parts. It was a
sequence of independent parts. The same testing is done so that it is easier to
work on any failures. `testDateTime_9` contains a chag e- don't touch years < 0
because of the GregorianCalendar issue.---
