By RICARDO ALONSO-ZALDIVAR WASHINGTON (AP) — Donna Weiner looks at Medicare’s prescription drug program from two different points of view. As a participant, she wants to pay less for her medicines, which cost her about $6,000 a year. As a retired accountant who spent 50 years handling the books for companies, she sees a way to get there. “You know from working in a business that it makes no sense for