What was really meant by stating
description "Emacs MIME support. Not needed for gnus >= 5.8.0"
for tm in `package-index.LATEST.pgp'? It is unlikely that gnus
itself, without using tm, is able to create full featured (multipart,
with specified encodings and so on) MIME messages. It looks to me
that currently gnus can only create single-part text/plain messages
and create encoded words in message headers for some fixed set of
charsets.