TAJO-694: Bump up hadoop to 2.3.0. (jinho)
TAJO-377: Implement concat function (Seungun Choe via jaehwa)
TAJO-378: Implement concat_ws function. (Seungun Choe via jaehwa)
TAJO-718: A group-by clause with the same columns but aliased causes planning error. (hyunsik)
TAJO-718: A group-by clause with the same columns but aliased causes planning error. (Add missed test query files)
TAJO-691: HashJoin or HashAggregation is too slow if there is many unique keys. (hyoungjunkim via hyunsik)
TAJO-700: Update site, wikis, pom.xml and other resources to point to the new repository location. (jihoon)
TAJO-713: Missing INET4 in UniformRangePartition. (jihoon)
TAJO-719: JUnit test failures. (jinho)
TAJO-706: In the case of very quick query, client can't get query status. (hyoungjunkim via hyunsik)
TAJO-529: Fix warnings in tajo-algebra. (jaehwa)
TAJO-480: Umbrella Jira for adding ALTER TABLE statement. (Alvin Henrick via hyunsik)
TAJO-709: Add .reviewboardrc and style changes to request-patch-review.py.