Forum OpenACS Q&A: Response to v3.2.4 ecommerce custom fields functionality broken

I see the problems. Besides the "add (foo type)" problem, there's also
the constraint, which needs to be in a separate alter statement (in 7.1).

If you fix it and send me a patch, I'll commit it this afternoon. If
not, I will try do do it later today (after I finish the upgrade script).