Global stocks fight back after third quarter beating

By Marc Jones LONDON (Reuters) - World stocks and commodities got 2015's final leg off to a solid start on Thursday after a bruising third quarter, as surveys of Chinese factory activity proved sounder than many global investors had feared. The Purchasing Managers' Index data nevertheless showed China's vast manufacturing sector contracted again in September, suggesting the world's second-largest economy is still cooling more rapidly than expected a few months ago. Overall China is clearly slowi