MHonArc v2.5.4 Released

[earl@earlhood.com]

<http://www.mhonarc.org/>

* Added more API callback functions:

    $CBDbPreLoad
	Right before database file is loaded.
    $CBDbPreSave
	Right before database file is written.
    $CBDbSave
	When data has been written.
    $CBRawMessageBodyRead
	After message body is read from input
    $CBRcVarExpand
	When a resource variable is being expanded.

  See API appendix of the documentation for more information.

* mha-decode now supports the following option: -dcd-digest.  This
  tells mha-decode to not recursively process attached message/rfc822
  and message/news entities.  This option is useful to extract
  out all the individual messages of a message digest.

* Added message/rfc822 and message/news to mhmimetypes.pl
  content-type => extension/description hash.  The extension used
  is ".822".

* Added ISO-8859-15 to default value of CHARSETCONVERTERS.  This should
  have been done in the previous release.

* A readmail:: variable is not written to database file if it is
  the default value.  The readmail:: variables that can be saved
  are controled by the CHARSETCONVERTERS, MIMEFILTERS, and MIMEARGS
  resources.

--ewh