resip/stack: create WsConnectionBase class to be used with WsConnection and WssConection - for the moment adds basic cookie support
resip/stack: create WsConnection and WssConnection classes
resip/stack: update WsTransport to create a WsConnection instead of TcpConnection
resip/stack: override createConnetion() method in WssTransport class to create a WssConnection
resip/stack: update makefile for recent additions
resip/stack: add basic Cookie headers support for use with WebSockets
resip/stack: add support for storing and accessing Cookies in SipMessage
resip/stack: store Cookies from the WebSocket handshake request
resip/stack: include WebSocket Cookies in SIP messages