TAJO-763: Out of range problem in utc_usec_to(). (hyunsik)
TAJO-763: Out of range problem in utc_usec_to() (modified contributor name to Ilhyun Suh in CHANGES.txt).
Refactoring some method and simplified arithmetic operators.
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/tajo into CodeGen
TAJO-777: Partition column in function parameter occurs NPE. (Hyoungjun Kim via hyunsik)
TAJO-777: Partition column in function parameter occurs NPE. (missed test files)
TAJO-748: Shuffle output numbers of join may be inconsistent. (jaehwa)
TAJO-675: maximum frame size of frameDecoder should be increased. (jinho)
TAJO-737: Change version message when daemon starts up. (hyunsik)
TAJO-652: logical planner cannot handle alias on partition columns. (Hyoungjun Kim via hyunsik)
add comparison code generator.
TAJO-786: TajoDataMetaDatabase::getSchemas creates invalid MetaDataTuple.
TAJO-783: Remove yarn-related code from tajo-core. (hyunsik)
TAJO-787: FilterPushDownRule::visitSubQuery does not consider aliased columns. (jaehwa)
TAJO-788: Update Tajo documentation and README, and BUILDING. (hyunsik)
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/tajo into CodeGen

Conflicts:
	tajo-core/src/main/java/org/apache/tajo/engine/eval/EvalTreeUtil.java
	tajo-core/src/main/java/org/apache/tajo/engine/eval/NotEval.java
	tajo-core/src/main/java/org/apache/tajo/engine/eval/SignedEval.java
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/tajo into CodeGen