It Happened on Sweet StreetBy: Caroline Adderson, Stephane Jorisch Cakes, cookies or pie? A rivalry among local bakers is the basis for this deliciously sweet, off the wall picture book. Monsieur Oliphant's cake shop, the only bakery game in town, has long had customers lining up outside its door for Oliphant's delicious jelly rolls and marvelous wedding cakes . . . until the day cookie concocter Mademoiselle Fe takes over the old shoemaker's shop. And it isn't long before the