Display some bounce data in 'show' output.  More data is available, but the
output is pretty long as it is.
Fix sime who-enhanced breakage I introduced with who-export.
Make some bounce handling parameters configurable.
Make delivery engine probe bouncing addresses.
(post) Do not purge the acknowledgement, since that would unlink
the spool file.
Add who-bounces-enhanced to the command menu.
(_list_file_get):  Add "DEFAULT:" to the file search path.

(who_chunk, Mj::Format::who):  Add preliminary code for who-bounces:
Number of bounces in the past week is displayed.  Only addresses
with bounces are shown.

(_show):  Include undescribed class in output, for use by mj_wwwusr.
Adapt showdata() to the new data returned by the show core subroutines.
Recognize a few additional bounce formats (Post.Office, Lotus, and another
old Sendmail version).
Bounce parsing tweaks.
Fix logic error in expire_subscriber_data.
Put token in envelope sender and use it to automatically delete tokens
  that bounce.
Fix bad crasher with bounces to majordomo-owner.
Minor bugfixes.
Make default_class variable actually do something.
Add indicator that bounce counts are smaller than reality due to expiry.
Rotated ChangeLog entries.
Renamed lib/Bf/Parser.pm to lib/Mj/BounceParser.pm.
Fixed overload stat generation.
Fix bugs in convertlist.pl
three new bounce-related configset variables,
added info to help file for 'configset addr_xforms'
added who-bounce option to 'help who'
documented additional variables in 'help variables'
three new bounce-related configset variables
Clean up convertlist.pl.
Fix createlist return values.
Make the keys of the token data equivalent to the keys of a
request hash: "request" is now "command," "requester" is now "user."