Apple made a fundamental change with its payment policy today in China, as the company now accepts the yuan for all purchases made on the App Store. Previously, customers were required to hold dual-currency credit cards -- merely to drop a couple dollars on Jet Car Stunts and the like -- which turned a significant portion of iOS users to the jailbreaking community. The higher-ups in Cupertino hope its newly pronounced love for the yuan will help drive millions of additional app sales while bringing customers back into the company's ecosystem. Cu