unit test stability

[Yonik Seeley]

OK, I think our unit tests are slowly getting in better shape.
They were failing at least 10% of the time, even on my fast box...
after the last fixups committed, I got up to 32 in a row before
failure.

Going forward, it would be nice to keep on top of these a little more,
otherwise the tests become like the little boy who cried wolf.

As to the failure in run#32: here it is.
    <error message="expected:&lt;2009-09-29 07:0[9]&gt; but
was:&lt;2009-09-29 07:0[8]&gt;" type="org.junit.ComparisonFailure"> at
org.apache.solr.handler.dataimport.TestEvaluatorBag.testGetDateFormatEvaluator(TestEvaluatorBag.java:120)
</error>

-Yonik
http://www.lucidimagination.com