Fixed (need tests update): boundary contains blanks.

[Matthias Andree]

[Resend: at 15:05 GMT, aotto.com claimed 129.217.163.1 was blocked by
orbs.dorkslayers.com. This service however appears to be dead, and I get
a NXDOMAIN now, so I'll just retry.]


I fixed a bug in the lexer part, which did not recognize boundaries that
contained spaces (these are permitted, as per RFC-2046). Apparently, I
hosed the original implementation. NEWS excerpt:

        * Fix bug in "boundary" parser, it ignored boundaries with spaces
          (these are permitted and generated for example by
          "Microsoft Internet E-Mail/MAPI - 8.0.0.4211").

This bug is likely the cause for base64 junk in data bases, because this
bug prevents skipping attachments.

David, could you adjust the tests for me?

-- 
Matthias Andree