Cary-based The Pantry (Nasdaq: PTRY), more recognizable by its Kangaroo Express chain of convenience stores, signed a two-year sponsorship deal with the Big South Conference, which includes Campbell University. Read: Restocking the Pantry: CEO Hatchell's plan shows promise Kangaroo Express will be recognized as the "Official Convenience Store" of the Big South Conference. The main component of the arrangement is a scholarship contest exclusively through the Kangaroo Express mobile app that…