Add sdk artifact for emulation test (#456)
Revise information log (#455)
Merge remote-tracking branch 'private/issue/455' into 0.7-develop
Merge remote-tracking branch 'private/issue/456' into 0.7-develop
Merge tag '0.7.2-M1' into 0.7-hadoop2-develop

Released version 0.7.2-M1
Changed version to 0.7-hadoop2-SNAPSHOT
Fixed project name (#456)
Memory leaks TestDriver with WindGate JDBC (#457).
Merge remote-tracking branch 'private/issue/456-M2' into 0.7-develop
Merge remote-tracking branch 'private/issue/457' into 0.7-develop
Merge tag '0.7.2-M2' into 0.7-hadoop2-develop

Released version 0.7.2-M2
fix for findbugs (#459).
Merge remote-tracking branch 'private/issue/459-M3' into 0.7-develop
Merge tag '0.7.2-M3' into 0.7-hadoop2-develop

Released version 0.7.2-M3
Bumped up document version to 0.7.2 (#458).
Revised configure-task-optimization document (#458).
Clarify error msg on testing w/ Direct I/O (#455).
Merge remote-tracking branch 'private/issue/455-M3' into 0.7-develop
Merge remote-tracking branch 'private/issue/458-M3' into 0.7-develop
Merge tag '0.7.2-M4' into 0.7-hadoop2-develop

Released version 0.7.2-M4