Add a new logging domain for transport proxies
velope suggested (and nickm is not against the idea of) adding a new logging domain for all the stuff to do with transport proxies / PTs. It would sure be nice to have transport proxy output like legacy/trac#9957 (moved) go to that specific domain; it would make debugging PT things easier, I think.
Does this make sense, or is there simply no need for it, really?