debug logging based on the standard logging infrastructure
fixing logging related FIXME-s
extending debug logging
Merge branch '1.4.0beta' into debuglog14
Merge branch 'debuglog14' of https://github.com/ligu/quickfixn into ssl_logging

Conflicts:
	QuickFIXn/ClientHandlerThread.cs
	QuickFIXn/SocketReader.cs
	QuickFIXn/ThreadedSocketReactor.cs
Fixed merge errors