Verbose bootstrap logging

Tor should strive to some extent for its warn runlevel logging to be understandable by non-techies. Startup with the current git tip sometimes warn about 301 redirects:

  Jul 19 16:09:49.163 [warn] Received http status code 301 ("Moved Permanently") from server 94.130.186.5:80 while fetching "/tor/server/d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z". I'll try again soon.

This has a couple issues:

1. These urls are huuuuuge and incomprehensible to anyone but us.
2. Are redirects really a problem we should warn about?

Roger discovered that these redirects are being produced by one of our fallback directories.