[Email-SIG] Patch: Improve recognition of attachment file name, with encodings

[Stephen J. Turnbull]

Bill Janssen writes:

 > Would it be possible to make this a configurable option, so that if
 > the user enables it, it's done?

I don't like it at all, but it has to be on the table, because I get
such malformed messages daily.  I don't think it's going to stop.
Users of the email module are going to want to read their mail,
they're going to want to read the file names, so they know where
they're saving attachments and what the content probably is.