HIVE-5931 : SQL std auth - add metastore get_principals_in_role api, support SHOW PRINCIPALS role_name (Thejas Nair via Ashutosh Chauhan)

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HIVE-5155 : Support secure proxy user access to HiveServer2 (Prasad Mujumdar via Thejas Nair)

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HIVE-6512 : HiveServer2 ThriftCLIServiceTest#testDoAs is an invalid test (Vaibhav Gumashta via Thejas Nair)

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HIVE-5099 : Some partition publish operation cause OOM in metastore backed by SQL Server (Daniel Dai via Thejas Nair)

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HIVE-6507 : OrcFile table property names are specified as strings (Sushanth Sowmyan via Thejas Nair)

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HIVE-6495 : TableDesc.getDeserializer() should use correct classloader when calling Class.forName() (Jason Dere via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/branch-0.13@1576834 13f79535-47bb-0310-9956-ffa450edef68
HIVE-6568: Vectorized cast of decimal to string and timestamp produces incorrect result (jitendra reviewed by Eric Hanson)

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