Prevent file locking on context stop

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1482144 13f79535-47bb-0310-9956-ffa450edef68
Simplify. Review by kkolinko

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1482146 13f79535-47bb-0310-9956-ffa450edef68