OPENJPA-2060: AnnotationProcess failed to generate metadata for List<String>[] attribute in entity.  Back-ported Albert Lee's trunk changes to 2.1.x.

git-svn-id: https://svn.apache.org/repos/asf/openjpa/branches/2.1.x@1469482 13f79535-47bb-0310-9956-ffa450edef68