Homeless preacher says spirit moves her Argyle city officials are planning her exodus 12/05/2002 By SCOTT FARWELL / The Dallas Morning News ARGYLE - It is possible, Janet Savage says, to see God in the long yellow light of a sunset, to hear his voice above the chatter of a material world, to feel his warmth on a frigid winter night, sleeping outside on a mattress that smells like an old shoe. "This life requires a spiritual commitment," she said recently, leaning forward in a patio chair outside an abandoned bank building in Argyle, where she lives. "But my...