private -> protected for QueryEngineMainFactory.

git-svn-id: https://svn.apache.org/repos/asf/jena/trunk@1533867 13f79535-47bb-0310-9956-ffa450edef68
TestLoader was being run twice.

git-svn-id: https://svn.apache.org/repos/asf/jena/trunk@1533868 13f79535-47bb-0310-9956-ffa450edef68