[Spambayes] Latest image spam/OCR update

[Mark Hammond]

> Perhaps someone in Windows-land can
> take the time to
> see if it's possible to build ocrad on Windows.

Using cygwin and gcc I was able to build an ocrad.exe on Windows (with one
simple patch necessary; a complaint about std::sprintf - just removing the
'std::' prefix got it building)

Sadly that is all I have time for today too though, but if anyone wants that
.exe to fiddle with, let me know.

Mark