SA 3.0 and Greylisting

I have looked everywhere I can think of to figure out how to get
SA-Exim's Greylisting to work with SA 3.0.

The current CVS of SA-Exim is supposed to support SA 3.0, but I couldn't
find a new patch file to patch SA with.  Am I missing something very
obvious?  I have seen no mention of this anywhere so I suppose everyone
else has figured out how to get it to work.

Can you please tell me your secret?

Thanks,
Kris