Fixed travi-ci message problem.
TAJO-867: OUTER JOIN with empty result subquery produces a wrong result. (Hyoungjun Kim via hyunsik)
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/tajo into TAJO-867
TAJO-867: OUTER JOIN with empty result subquery produces a wrong result. (missed github issue close.)

Closes #35
fixed available resource checking
 TAJO-894: Left outer join with partitioned large table and small table returns empty result. (Hyoungjun Kim via hyunsik)

 Closes #50
fetcher ramdom access
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/tajo into taskrunner

Conflicts:
	tajo-common/src/main/java/org/apache/tajo/conf/TajoConf.java
	tajo-core/src/main/java/org/apache/tajo/master/rm/TajoWorkerResourceManager.java
fixed the running tasks number