FARMINGTON, Mich. - Jan Stevenson plans a summer wedding, a small affair with 30 or 40 friends and family. She hasn't picked a chapel or even a city. But she has picked a country. She and partner Susan Horowitz will marry next summer in Canada. The gay couple's union will be a ceremony laced with private sentiment and public symbolism. ``This is the line in the sand, the marriage issue,'' said Horowitz, 51, of Farmington. ``We are their vision of hell.'' It's in to be out. In the bedroom, gays now can do what they want without fear of being...