DEVON, Pa.— Following a hugely successful and popular inauguration last year, the Devon Fall Classic, featuring an all-jumper show with boutique shopping, music, delicious food and rides and games, will be held Sept. 12-15 at the Devon show grounds on Route 30. Laura Chapot of Neshanic Station, N.J., who won the $25,000 Devon Fall Classic Grand Prix last year on Umberto and also placed third on Zealous, is bringing both back this year in defense of her title