JSR-356 - Cleaning up sendObject(Object) behavior between Basic & Async
JSR-356 - fixing NPE on Extension.getParameters()
JSR-356 - Handling ClientContainer.setMax(Text|Binary)MessageBufferSize better

 + The Jetty API is more configurable than the JSR, this forces the
   Jetty side API to be consistent for whatever value the end user
   specifies.