- Use the extensions specified by the configuration (and ignore if there are no associated transformations).
- Add an origin header on the client.
- Add path params as params too.
- Use the case insensitive map for all headers.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1642360 13f79535-47bb-0310-9956-ffa450edef68