Toll Bros. (TOL) will report earnings Wednesday after a steady stream of positive housing news has investors primed for what could be the long-awaited turnaround in the market. Reports from rival homebuilders like PulteGroup (PHM) showed improved orders and backlogs for new homes. Housing starts and sales are up as well. Sales of existing homes, while not the main business of homebuilders, are turning up too, pointing to more overall momentum in