HIVE-4785 : Implement isCaseSensitive for Hive JDBC driver (Robert Roland via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1498576 13f79535-47bb-0310-9956-ffa450edef68
HIVE-4757 : LazyTimestamp goes into irretrievable NULL mode once inited with NULL once (Gopal V via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1498577 13f79535-47bb-0310-9956-ffa450edef68
HIVE-4430 : Semantic analysis fails in presence of certain literals in on clause (Kevin Wilfong via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1498580 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk-gd