HIVE-6906 Fix assembly/src.xml so that sr tar ball contains top level pom.xml (Harish Butani via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/branch-0.13@1587373 13f79535-47bb-0310-9956-ffa450edef68
HIVE-6907 HiveServer2 - wrong user gets used for metastore operation with embedded metastore (Thejas Nair via Jitendra Pandey)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/branch-0.13@1587375 13f79535-47bb-0310-9956-ffa450edef68
HIVE-6909 Update Release Note for Hive 0.13 RC1 (Harish Butani via Gunther Hagleitner)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/branch-0.13@1587377 13f79535-47bb-0310-9956-ffa450edef68