A French woman fatally shot investment banking mogul Edouard Stern "in the course of sexual relations," Swiss authorities charged yesterday. Stern, 50, was found dead in his Geneva apartment March 1, clad head to foot in a latex suit and shot four times, twice in the head. The woman was not identified. Stern and the suspect had a relationship for many years, authorities said ........... "The motives are not completely clear," the Tribune de Geneve reported. "They could be of a financial nature, as the suspect had recently been in a lawsuit with Stern, but also of a personal nature."...