STOCKHOLM (Reuters) - Sweden's Handelsbanken said on Monday it had appointed bank veteran Carina Akerström as its new chief executive officer, replacing Anders Bouvin, who is retiring.Akerström takes up her new position at Handelsbanken's annual general meeting on March 27, the bank said. "The choice of Carina Akerström rests on a verysolid, stable foundation, in view of her track record and excellent results over a long period of time," Handelsbanken Chairman Par Boman said in a..