HIVE-5367: fix hive-tez build after tez updates (Thejas Nair via Gunther Hagleitner)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/tez@1526384 13f79535-47bb-0310-9956-ffa450edef68
HIVE-5386: Update DagUtils/Tez task to reflect tez api changes (Gunther Hagleitner)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/tez@1527058 13f79535-47bb-0310-9956-ffa450edef68