Fix log4j method not found and commons-io not in WEB-INF/lib

Fix log4j method not found and commons-io not in WEB-INF/lib

* [derby-]war tasks use log4j-1.2.8.jar from jpivot.war to build war file
* [derby-]war tasks don't copy commons-io.jar into dest war file
* This fix uses all dependencies in mondrian to overwrite jars from jpivot.war