- message header state tracking is now done by handling mime_one_header
instead of parsing the data in the smtp_data event
- changed the logging point to be when an smtp_reply is seen in response
to the end of a DATA section
- the smtp package now uses it's own mime script and logging stream for
logging entities, extraction, etc.
- fixes for mime file extraction: now logs the extracted file name, and
the count of extracted files needed to be maintained in the State record