Merge branch 'bug40286_disable_min_035' into maint-0.3.5

  o Major bugfixes (denial of service):

    - Disable the dump_desc() function that we used to dump unparseable

      information to disk. It was called incorrectly in several places,

      in a way that could lead to excessive CPU usage.

      Fixes bug 40286; bugfix on 0.2.2.1-alpha.

{

  tor_assert(desc);

  tor_assert(type);

#ifndef TOR_UNIT_TESTS

  /* On older versions of Tor we are disabling this function, since it

   * can be called with strings that are far too long. */

  if (1)

    return;

#endif

  size_t len;

  /* The SHA256 of the string */

  uint8_t digest_sha256[DIGEST256_LEN];