GLOBAL MARKETS-Euro heads for longest losing streak after ECB's move

* Euro skids as ECB cuts rates, plans asset-buying spree* European shares retreat on profit taking, focus on U.S. jobs* Euro zone bond yields continue to fallBy Atul PrakashLONDON, Sept 5 (Reuters) - The euro hovered near a 14-month low on Friday and headed for its longest weekly losing streak against the dollar in its history after the European Central Bank&aposs surprise move to cut rates and em