As he stood next to a stack of books and a table full of killer food Sunday afternoon at the Barnes & Noble across from Cary Towne Center, the icons of Matt Goulding’s life were within 50 yards. Across Maynard Street was Cary High School, where Goulding graduated in 1999; at the far end of the parking lot was Macaroni Grill where he rose from busboy to the chain restaurant’s chief antagonist (and more recently, a key ally). And the books next to him represented the franchise created by him and David Zinczenko and that has succeeded far beyond their — or anyone’s — dreams.