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The review command could only do approvals, verifies, comments, and submits. It now can also do abandons and restores like the WUI. Also refactor the abandon and restore logic out of the AbandonChange and RestoreChange classes and into the ChangeUtil class since it is used by both the WUI and SSH now. Bug: issue 674 Change-Id: I7ac24a0ff47f3edaebb6fcad8ad3127f370e5672