TAJO-215: Catalog should allow compatible types when finding functions. (Alvin Henrick via hyunsik)
TAJO-745: failure of INSERT INTO may remove the target table. (hyunsik)
TAJO-732: Support executing LINUX shell command and HDFS command. (hyoungjun kim via hyunsik)
TAJO-755: ALTER TABLESPACE LOCATION support. (hyunsik)
TAJO-759: Fix findbug errors added recently.
TAJO-753: Clean up of maven dependencies. (jinho)
Merge branch 'branch-0.8.0' of https://git-wip-us.apache.org/repos/asf/tajo

Conflicts:
	tajo-catalog/tajo-catalog-client/pom.xml
	tajo-catalog/tajo-catalog-drivers/pom.xml
	tajo-catalog/tajo-catalog-drivers/tajo-hcatalog/pom.xml
	tajo-catalog/tajo-catalog-server/src/main/java/org/apache/tajo/catalog/CatalogServer.java
	tajo-client/pom.xml
	tajo-common/pom.xml
	tajo-core/tajo-core-backend/pom.xml
	tajo-core/tajo-core-pullserver/src/main/java/org/apache/tajo/pullserver/TajoPullServerService.java
	tajo-jdbc/pom.xml
	tajo-project/pom.xml
	tajo-rpc/pom.xml