TAJO-250: QueryMaster must send the query finish heartbeat. (fixed a missing part)
TAJO-231: In StorageManger v2, TestCSVCompression incurs unexpected end of stream occasionally. (hyunsik)
TAJO-169: the default TAJO_WORKER_STANDBY_MODE in tajo-env.sh is wrong. (hyunsik)
TAJO-251: Rename the legacy name *.tql to *.sql. (hyunsik)
TAJO-252: Add DISCLAIMER file. (hyunsik)
TAJO-253: Clean up tajo-default.xml in test resource. (hyunsik)