Merge remote branch 'origin/maint-0.2.2'

  o Minor features (authorities)

    - Directory authorities now reject relays running any versions of

      Tor between 0.2.1.3-alpha and 0.2.1.18 inclusive; they have

      known bugs that keep RELAY_EARLY cells from working on rendezvous

      circuits.  Followup to fix for bug 2081.

    - Directory authorities now reject relays running any version of Tor

      older than 0.2.0.26-rc.  That is the earliest version that fetches

      current directory information correctly.  Fix for bug 2156.

              strmap_size(fingerprint_list->fp_by_name),

              digestmap_size(fingerprint_list->status_by_digest));

  /* Tor 0.1.2.x is pretty old, but there are a lot of them running still,

   * and there aren't any critical relay-side vulnerabilities. Once more

   * of them die off, we should raise this minimum to 0.2.0.x. */

  if (platform && !tor_version_as_new_as(platform,"0.1.2.14")) {

  /* Tor 0.2.0.26-rc is the oldest version that currently caches the right

   * directory information.  Once more of them die off, we should raise this

   * minimum. */

  if (platform && !tor_version_as_new_as(platform,"0.2.0.26-rc")) {

    if (msg)

      *msg = "Tor version is far too old to work.";

    return FP_REJECT;

  } else if (platform && tor_version_as_new_as(platform,"0.2.1.3-alpha")

                      && !tor_version_as_new_as(platform, "0.2.1.19")) {

    /* These versions mishandled RELAY_EARLY cells on rend circuits. */

    if (msg)

      *msg = "Tor version is too buggy to work.";

    return FP_REJECT;

  }

  result = dirserv_get_name_status(id_digest, nickname);