[toaster] greylisting update 20051215

[Bill Shupp]

I have updated the greylisting patch to apply over the 0.8 patch 
cleanly.  It also supports configuration via environment variables, 
rather than compiled in values, as well as logging to standard error. 
Please see the top of the patch for details:

http://shupp.org/patches/greylisting-20051215.patch
Thanks to Joshua Megerman for the environment config patch.

Regards,

Bill Shupp