TAJO-554: LogicalPlanner should allow additional expressions with asterisk in select list. (jihoon)
TAJO-598: Refactoring Tajo RPC. (jinho)
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/incubator-tajo into TAJO-305_3

Conflicts:
	tajo-core/tajo-core-backend/src/main/java/org/apache/tajo/master/querymaster/QueryMasterManagerService.java
	tajo-core/tajo-core-backend/src/main/java/org/apache/tajo/master/querymaster/QueryMasterTask.java
	tajo-core/tajo-core-backend/src/main/java/org/apache/tajo/worker/TajoResourceAllocator.java
	tajo-core/tajo-core-backend/src/main/java/org/apache/tajo/worker/Task.java
Reflected the comments.
Reflected.