NOJIRA Fix accuracy issue with GeocodeAttributeTest.

Not sure why this test is giving so many issues, surely the address hasn't moved (?!)  Also curiously, this test was passing on PHP 5.3 and failing on 5.4 and 5.5.

Anyway this sets a consistent accuracy of 0.001 which should prevent any further problems.  The regex style match on the text field is also updated to match.