Suppress some unused code warnings in the unit tests

git-svn-id: http://svn.apache.org/repos/asf/commons/proper/dbcp@1549782 13f79535-47bb-0310-9956-ffa450edef68
Fix some easy TODOs

git-svn-id: http://svn.apache.org/repos/asf/commons/proper/dbcp@1549802 13f79535-47bb-0310-9956-ffa450edef68
Updates

git-svn-id: http://svn.apache.org/repos/asf/commons/proper/dbcp@1549808 13f79535-47bb-0310-9956-ffa450edef68