The People’s Bank of China governor says that the US dollar should be replaced as the world’s reserve currency. Colin Teese reports.Who would ever have believed it – China telling the US how to fix the mistakes that free-market economics has visited upon the world? And on the eve of the G20 summit!How does this come about? For a start, China is crucial to America’s economic recovery. According to the New York-based Council for Foreign Relations, unless China takes up about 30 per cent of U…