Improve consistency within new resources implementation.
s/webAppPath/webAppMount/
Place same requirements on webAppMount as for path (although internal representation is different).
Add necessary plumbing to do the same for internalPath

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1430285 13f79535-47bb-0310-9956-ffa450edef68
Improve consistency within new resources implementation.
Place same requirements on internalPath as for path (although internal representation is different).

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1430293 13f79535-47bb-0310-9956-ffa450edef68