CR check in base64_decode

[Matthias Andree]

David Relson <relson at osagesoftware.com> writes:

> lexer_v3.l calls text_decode() which calls base64_decode().  The EOL
> sequence is included in the word_t that's passed along.  An interesting
> experiment would be to have lexer_v3.l exclude the EOL.....

Ja. Particularly might this fix some of the performance issues with
unclosed tags that some users may have observed, although it might still
be susceptible to overlong lines. These can be chopped into pieces
though. Longer than c. 1,000 characters including CRLF doesn't pass
through SMTP anyhow.

-- 
Matthias Andree