* Completely refactored win32_acceptor_service_impl.hpp and related dependencies to handle either TCP or PIPE transport (FastCGI specification specifically says the host server may use either one, and a FastCGI application needs to detect which one is being used.)
* Fixed basic_request_acceptor.hpp to work with boost::asio tcp connections since it was incorrectly implemented for a FastCGI application.  The web server has already created a socket and is listening for a new connection.  (Reading the FastCGI specification will give the reader an incorrect interpretation of section 3.2 if section 2.2 is not taken into consideration.)
* Refactored to handle admin requests (i.e. GET_VALUES)
* Removed some depricated (unused) code.