Instantiate an RPCHandler per request.

RPCHandlers are pretty light objects and this allows us to pass in
parameters like the InfoSub object without locking or adding more
parameters to the RPC methods.

src/cpp/ripple/RPCServer.h

@@ -22,9 +22,7 @@ public:
 
 private:
 	
-
 	NetworkOPs*	mNetOps;
-	RPCHandler mRPCHandler;
 
 	boost::asio::ip::tcp::socket mSocket;