This adds a mostly working data-pipelining implementation, the remaining issues that need to be solved before it's complete are:
1) The signing fetcher currently uses the $_POST superglobal and not the $request->getPostBody() to build the signature, resulting in invalid oauth sig's
2) the signing fetch also uses the same, parsed, $_POST vars, to set a new post body on the request, removing the actual post body with the data-pipelining information
3) JSP-EL type parsing of dynamic tags still needs to be implemented.
Almost there though! :)
git-svn-id: https://svn.apache.org/repos/asf/incubator/shindig/trunk@760722 13f79535-47bb-0310-9956-ffa450edef68