[ic] ups_query caching

[Matt Kerner]

I've been wading through the ups_query.tag code to figure out how to 
cache the lookup values so that the problem I mentioned in previous 
emails won't occur. We're having orders that show up with a $0 shipping 
charge (sometimes in the notifications/receipts, sometimes at the 
credit processor). My understanding is that the only solution to this 
problem is to cache the lookups from UPS.

How exactly would I go about setting up the ups_cache table? I'm using 
postgres as my database.

Thanks,
Kerner