update help files:
  new configset options for set_policy and archive_access
  new text in configset files for sub/unsubscribe_policy
  many minor changes in generated portion of help configset_* headers
new configset options for set_policy and archive_access
(_a_confirm2) Allow the command if the requester and victim are
identical and the victim's password was supplied.
add cross-referencing between all *_access and *_policy configset variables,
clean up notes about when passwords are required in changeaddr/confirm2
Let bounce parsers return diagnostic messages and present them to the owner.
better cross-reference between access_rules, *_access, *_policy configset help files
add comments about interaction of get/index with
archive-get/archive-index, and with get_access
and archive_access and archive_index configset
(too complicated, eh?)
More bounce parsing tweaks.
Add Mj::Config::whence(), which determines which data were used
for a particular configuration setting:  the installation defaults,
the DEFAULT list settings, or the list's own settings.  This
information is displayed as a comment with the output of
the configshow command.
Do not use R_CURSOR when deleting keys.
(tokeninfo)  Indicate reasons if they exist.
*** empty log message ***
Even more work on bounce parsing.
Test to see if the queue file exists after acquiring a lock.
It is possible to acquire a lock on a file that has been renamed,
so a race condition has continued to exist for stalled posts.
Use the remote IP address as the local part of
the fake requester address.
Beginnings of -c command handling: redo Parser::parse_entity calling
convention.
More minor changes leading up to single-command addresses.
Include the name of the request in the description for
English consult/confirm files.
Add explanation of reasons in consult, confirm, token_remind
files.
(_a_default) Specify reasons for many of the default actions.