Commit change missed in r1427851

git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc7.0.x/trunk@1428015 13f79535-47bb-0310-9956-ffa450edef68
Prevent ClassNotFoundExceptions on stop when running as a service

git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc7.0.x/trunk@1428018 13f79535-47bb-0310-9956-ffa450edef68