WRAPUP 5-Olympics-U.S. women smash relay record, Defar takes 5,000 (Reuters)

* U.S. women win sprint relay, break East German worldrecord * Ethiopian Defar upstages compatriot Dibaba in women's5,000m * Bahamas run down U.S. to win men's 4x400m * Three golds for former drug offenders; two runnerssuspended (Recasts with women's relay, 5,000, 1,500 and men's 4x400) LONDON, Aug 10 (Reuters) - America's women left their greatJamaican rivals trailing to storm to gold in the Olympic sprintrelay on Friday, running a perfect race to smash one of theoldest world records in the book. ...