Grim China data keeps stimulus hopes alive

By Lionel Laurent LONDON (Reuters) - A deepening slowdown in demand in China took center-stage on Monday, boosting some stock markets on hopes of more policy stimulus even as it knocked commodity prices. China's stock markets bucked broad cautiousness in Asian equities with major indices up between 2 and 4 percent, while European trading got off to a subdued start as mining and energy stocks pulled the pan-European FTSEurofirst 300 equity index down 0.2 percent. Chinese producer prices in J