Selloff Circles Globe, As Central Banks Work To Calm Fears EUROPEAN, ASIAN MARKETS PLUNGE, SIGNAL SHARP U.S. LOSSES Global markets slumped in a freefall Monday, despite the concerted efforts of central banks and government agencies to stem a panic about the financial services system, presaging a steep selloff in U.S. equities when trading opens Monday. In London, the FTSE has lost more than 5%, ditto for the CAC, also off greater than 5%, despite a combined effort by the European Central B