remove old changes that were folded into 0.2.1.26

  o Major bugfixes:

    - Directory mirrors were fetching relay descriptors only from v2

      directory authorities, rather than v3 authorities like they should.

      Only 2 v2 authorities remain (compared to 7 v3 authorities), leading

      to a serious bottleneck. Bugfix on 0.2.0.9-alpha. Fixes bug 1324.

  o Major bugfixes:

    - Relays now close idle circuits early if it looks like they were

      intended for directory fetches. Such circuits are unlikely to

      be re-used, and tens of thousands of them were piling up at the

      fast relays, causing the relays to run out of sockets and memory.

      Bugfix on 0.2.0.22-rc (where clients started tunneling their

      directory fetches over TLS).

  o Major bugfixes:

    - Make relays more aggressive about closing TLS connections that

      have no circuits on them. Tens of thousands of them were piling

      up at the fast relays, causing the relays to run out of sockets

      and memory. Bugfix on 0.2.0.22-rc (where clients started tunneling

      their directory fetches over TLS).

  o Minor features:

    - Finally get rid of the deprecated and now harmful notion of

      "clique mode", where directory authorities maintain TLS connections

      to every other relay.

  o Major bugfixes:

    - Fix SSL renegotiation behavior on OpenSSL versions that claim to

      be earlier than 0.9.8m, but which have in reality backported huge

      swaths of 0.9.8m or 0.9.8n renegotiation behavior.  Possibly fix

      for some cases of bug 1346.