try to enforce more use of XMLInput factory for ibm issue with generated stax readers

git-svn-id: https://svn.apache.org/repos/asf/archiva/trunk@1446362 13f79535-47bb-0310-9956-ffa450edef68
prevent possible NPE

git-svn-id: https://svn.apache.org/repos/asf/archiva/trunk@1446363 13f79535-47bb-0310-9956-ffa450edef68
jackrabbit 2.6.0

git-svn-id: https://svn.apache.org/repos/asf/archiva/trunk@1446364 13f79535-47bb-0310-9956-ffa450edef68