Issue #58: fine tune logging
Issue #58: make SocketStream and friends continuation friendly by wrapping GsSocket references in a TransientStackValue. Add ZnTransactionSafeManagingMultiThreadedServer a subclass of ZnManagingMultiThreadedServer where all references to GsSockets are wrapped by a TransientStackValue ... including places where GsSockets are passed as arguments ... this makes the server instance transaction safe, so continuations can be snapped off and transactions can be safely used in delegates ...