The com.google.step2.VerificationException thrown in
com.google.step2.ConsumerHelper.verify(String, ParameterList,
DiscoveryInformation) (l.121 on r.540/trunk) could be improved.
The org.openid4java.consumer.VerificationResult.getStatusMsg() is always set if
the org.openid4java.consumer.VerificationResult.getAuthResponse() is of type
org.openid4java.message.AuthSuccess.