Fix for build-breaking test... even though 1.4 is "done," I want the tests 
to work.  The old version of this test was sensitive to Daylight Savings 
Time.  Back-ported from trunk r1556.

Patch by: fabbott
Review by: jat


git-svn-id: https://google-web-toolkit.googlecode.com/svn/releases/1.4@1868 8db76d5a-ed1c-0410-87a9-c151d255dfc7