HIVE-7772 - Add tests for order/sort/distribute/cluster by query [Spark Branch] (Rui Li via Brock)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/spark@1619903 13f79535-47bb-0310-9956-ffa450edef68
HIVE-7702 - Start running .q file tests on spark [Spark Branch] (Chinna Rao Lalam via Brock)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/spark@1619924 13f79535-47bb-0310-9956-ffa450edef68
HIVE-7839 - Update union_null results now that it's deterministic [Spark Branch] (Brock via Szehon)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/spark@1619945 13f79535-47bb-0310-9956-ffa450edef68