*Singapore dollar climbs to 5-week high of 1.9747 against European currency

South Korean Won Eases Against Yen And Dollar

*Singapore dollar slightly off 9-week high against Hong Kong currency; pair now at 5.1728

*Fitch Ratings Downgrades Thailand's Long-term foreign currency IDRs to 'BBB' from 'BBB+'

US dollar bounces back against European majors; climbs from 3-month low versus pound