HIVE-6493: Tez 0.3.0 API change (Gunther Hagleitner)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/tez@1571424 13f79535-47bb-0310-9956-ffa450edef68
HIVE-6444: Create unique dag id for tez 0.3 (Gunther Hagleitner)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/tez@1571460 13f79535-47bb-0310-9956-ffa450edef68
HIVE-6442: load_dyn_part1 is flaky on Tez because it doesn't have the stage re-arranger (Gunther Hagleitner)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/tez@1571481 13f79535-47bb-0310-9956-ffa450edef68