Always validate the password during to the login process.
Thanks to Roger Klorese.
Add support files for the new tokeninfo-part commands.
Version number is now 0.1200111130.
(dispatch)  Make mode checking stricter, including tests
  for incompatible modes and missing prerequisites.
(sessioninfo_start)  Cease dealing with message spool files.
  The tokeninfo-full command is no longer supported.
(tokeninfo_start)  The tokeninfo command is now iterated.
  Iteration allows the contents of message parts to be obtained
  in chunks.  Add support for the tokeninfo "part" modes:
  part, part-delete, part-edit, and part-replace, which deal
  with body parts of moderated messages and their headers.
(_get_msg_data)  Obtain or alter a table of entities within
  a moderated message and return the revised table.  Each entity
  is numbered, which allows parts to be altered or removed using
  the appropriate number.  Part "0" refers to the whole message.
Add command mode data to determine which modes are incompatible and
which modes require the use of other modes.  Add support for the
tokeninfo-part commands, and remove support for the tokeninfo-full
command.
(_tokeninfo_post)  Move code to handle tokens for moderated messages
  into a separate routine.  Add support for the new tokeninfo-part
  commands.