rfc822 parser (the elephant has landed)

Things have been a bit disrupted in my life over the past month (a family
tragedy).  Fortunately for this group one of my ways of coping is to write
code, so I did manage to do a fair bit on the email6 project, I just haven't
been keeping up with publishing about it consistently.  I did write one other
blog post before today's.  Here are the two links:

    http://www.bitdance.com/blog/2011/05/23_01_Email6_Headers_and_Header_Classes/
    http://www.bitdance.com/blog/2011/06/08_01_Email6_RFC822_Parser/

The big thing is an RFC822 parser.  I should probably have asked for advice
here before plunging in to it, but it seemed reasonably straightforward when I
started :).  And it still seems simple in outline, just complex in details.

Take a look and give me whatever feedback you've got.

--
R. David Murray           http://www.bitdance.com