forward-port r9850 and the changelogs

      to 'getinfo addr-mappings/*'.

Changes in version 0.1.2.12-rc - 2007-03-16

  o Major bugfixes:

    - Fix an infinite loop introduced in 0.1.2.7-alpha when we serve

      directory information requested inside Tor connections (i.e. via

      begin_dir cells). It only triggered when the same connection was

      serving other data at the same time. Reported by seeess.

  o Minor bugfixes:

    - When creating a circuit via the controller, send a 'launched'

      event when we're done, so we follow the spec better.

Changes in version 0.1.2.11-rc - 2007-03-15

  o Minor bugfixes (controller), reported by daejees:

    - Correct the control spec to match how the code actually responds

      to 'getinfo addr-mappings/*'.

    - The control spec described a GUARDS event, but the code

      implemented a GUARD event. Standardize on GUARD, but let people

      ask for GUARDS too.

Changes in version 0.1.2.10-rc - 2007-03-07

  o Major bugfixes (Windows):

    - Do not load the NT services library functions (which may not exist)

  connection_printf_to_buf(conn, "250 EXTENDED %lu\r\n",

                             (unsigned long)circ->global_identifier);

  if (zero_circ) /* send a 'launched' event, for completeness */

    control_event_circuit_status(circ, CIRC_EVENT_LAUNCHED, 0);

 done:

  SMARTLIST_FOREACH(router_nicknames, char *, n, tor_free(n));

  smartlist_free(router_nicknames);