Bug in OpenBSD spamd

[Doug Hardie]

There is a bug in OpenBSD's spamd.  The value for the whitelist  
expiration that can be set with the arguments to spamd is not used by  
spamlogd.  It uses the hard-coded value of 36 days in grey.h.  As a  
result if you think you are changing the time a whitelist entry is  
retained, you are actually not.  It will always be 36 days.  The  
easiest way to correct this is to add an argument to spamlogd with the  
desired value and overwrite the default.