HIVE-6178. Implement vectorized reader for DECIMAL datatype for ORC format (jitendra)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1563224 13f79535-47bb-0310-9956-ffa450edef68
HIVE-6287: batchSize computation in Vectorized ORC reader can cause BufferUnderFlowException when PPD is enabled (Prasanth J via Gunther Hagleitner)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1563260 13f79535-47bb-0310-9956-ffa450edef68
HIVE-6112 : SQL std auth - support new privileges INSERT, DELETE (Thejas Nair, reviewed by Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1563321 13f79535-47bb-0310-9956-ffa450edef68
HIVE-6209: 'LOAD DATA INPATH ... OVERWRITE ..' doesn't overwrite current data (Szehon Ho via Prasad Mujumdar)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1563334 13f79535-47bb-0310-9956-ffa450edef68
HIVE-6257: Add more unit tests for high-precision Decimal128 arithmetic (Eric Hanson, reviewed by Jitendra Pandey)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1563338 13f79535-47bb-0310-9956-ffa450edef68