Consider separating out the various parts of *URL Hacks* into separate options about httrack

[AnyOldName3]

I determined that the particular site could in principle have worked with both the http:///https:// equivalence and the www.domain/domain equivalence, but the system to detect when one redirected to another failed when it took more than one step. The http:// URLs redirected to the https:// URLs, which HTTrack handled sensibly, but then the non-www. URLs redirected to the www. ones, which HTTrack didn't bother fetching. I'm guessing that this was misinterpreted as a redirect loop as the URLs were the same after normalisation, but they were different before normalisation.