Turn on the null groups tests, now that the gwt null varargs bug is fixed. [JSR 303 TCK Result] 64 of 257 (24.90%) Pass with 26 Failures and 4 Errors. Review at http://gwt-code-reviews.appspot.com/1288803 Review by: rchandia@google.com git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@9579 8db76d5a-ed1c-0410-87a9-c151d255dfc7