SHANGHAI/NEW YORK (Reuters) – When the International Monetary Fund agrees on Monday to add the Chinese yuan to its reserves basket in the biggest shake-up in more than three decades, the IMF can afford itself a congratulatory nod. By acknowledging the yuan as a major global currency alongside the dollar, euro, yen, and pound, as is widely expected, IMF members will endorse the efforts of China’s economic reformers and by doing so hope that will spur fresh change in China.