Shares, bond yields gain as currency war fears ease

By David Gaffen NEW YORK (Reuters) - Shares revived and bond yields rose in major markets on Thursday after China's central bank reassured investors there was no reason for its currency to keep falling. Despite the calming markets, the yuan weakened for a third day and some forecast further declines in the face of a weak economy, even as People's Bank of China Vice-Governor Yi Gang dismissed talk of a deeper devaluation. The PBOC set its guidance rate at 6.4010 per dollar prior to the