Merge remote branch 'arma/bug1362'

  o Minor features:

    - When we run out of directory information such that we can't build

      circuits, but then get enough that we can build circuits, log when

      we actually construct a circuit, so the user has a better chance of

      knowing what's going on. Fixes bug 1362.

    log(quiet ? LOG_INFO : LOG_NOTICE, LD_DIR,

        "Our directory information is no longer up-to-date "

        "enough to build circuits: %s", dir_info_status);

    /* a) make us log when we next complete a circuit, so we know when Tor

     * is back up and usable, and b) disable some activities that Tor

     * should only do while circuits are working, like reachability tests

     * and fetching bridge descriptors only over circuits. */

    has_completed_circuit = 0;

    control_event_client_status(LOG_NOTICE, "NOT_ENOUGH_DIR_INFO");

  }

  have_min_dir_info = res;