OODT-734: fixed test classes in file manager system package to find test resources and reset system properties

git-svn-id: https://svn.apache.org/repos/asf/oodt/trunk@1616044 13f79535-47bb-0310-9956-ffa450edef68
minor correction to CHANGES.txt

git-svn-id: https://svn.apache.org/repos/asf/oodt/trunk@1616046 13f79535-47bb-0310-9956-ffa450edef68