ResourceSets added via a context.xml file need a default internalPath

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1557146 13f79535-47bb-0310-9956-ffa450edef68
ResourceSets added via a context.xml file need a default internalPath

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1557147 13f79535-47bb-0310-9956-ffa450edef68
Ensure directory name is displayed as part of directory listings

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1557148 13f79535-47bb-0310-9956-ffa450edef68