infrastructure for easier schema changes, and: add payment_gateway, payment_gateway_option and agent_payment_gateway tables, add paystart_month, paystart_year, payissue and payip fields to cust_main, add preliminary gateway and gateway override editing to web UI, use payment gateway override when processing payments (card type, not taxclass yet)2005-08-17T22:23:46+00:00ivanivan2005-08-17T22:23:46+00:00feef0e4c2b4bd6b776b25f5a1bd6fdbf63fd08b2