Initial skeleton of web_socket wrapper for emscripten-nacl

added a websocket test skeleton

added testing for websockets

adjust reserved_function_pointers

update makefile for pepper_35 pnacl release

Applied ncbray comments to websocket test and patch

Added string return value logic: strings should now properly be returned. Tested with URL and validated that a slash will help to canonicalize the URL in the test procedure.

Small code cleanup