Fix BZ 57215. Ensure that the value returned by
HttpServletRequest.getContextPath() is not decoded which also implies it
has not been normalized.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1640083 13f79535-47bb-0310-9956-ffa450edef68
Fix BZ 57172. Throw an ISE with appropriate message if an attempt is
made to load a resource from a web application class loader than has
been stopped.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1640084 13f79535-47bb-0310-9956-ffa450edef68