Stocks head for another week of gains after Wall Street triple high

By Marc Jones LONDON (Reuters) - World stocks were headed for their fourth week of gains in five on Friday after a surge in oil prices helped propel Wall Street's three main indexes to co-ordinated record highs for the first time since 1999. MSCI's 46-country 'All World' index hovered at a one-year top as Europe's main bourses ran out of momentum having briefly hit a post-Brexit vote high in opening deals. It followed Wall Street's landmark close and 1 percent plus gains in Tokyo and China overn