HIVE-6221 : Optimize stats based queries in presence of filter (Ashutosh Chauhan via Thejas Nair)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1559364 13f79535-47bb-0310-9956-ffa450edef68
HIVE-6197 : Use paths consistently - VI (Ashutosh Chauhan via Xuefu Zhang)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1559366 13f79535-47bb-0310-9956-ffa450edef68
HIVE-6193 : change partition pruning request to metastore to use list instead of set (Sergey Shelukhin via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1559367 13f79535-47bb-0310-9956-ffa450edef68