An IMAPS-FOLDER enforces an SSL connection regardless of what port you use

MAKE-MESSAGE-FROM is a generic function that allows creating messages from arbitrary objects. It already defines methods for PATHNAME and STRING. The file's or string's contents need to be valid MIME messages for them to work.

Implement utility functions message-string and part-body-string (js@codeartist.org--2004-public/mel-base--dev--0.5--patch-29)
js@codeartist.org--2004-public/mel-base--dev--0.5--patch-29
Keywords: 

MESSAGE-STRING returns the message as a string.
PART-BODY-STRING returns the body of the part as a string.

js@codeartist.org--2004-public/mel-base--dev--0.5--patch-26
Keywords: 

MAKE-TOPLEVEL-PART: Create a multipart object structure from
		    the bodystructure of a message.
TOPLEVEL-PART:	    Get the toplevel-part of a message.
PARTS:		    Get the subparts of the given message or
		    multipart. For a simple part the result
		    is the part itself in a list.

Fix spelling of BODYSTRUCTURE in packages.lisp.