Bailey McCall plays Jenna in ‘Waitress,’ set for November at the Playhouse on Rodney Square. Photo by Jeremy Daniel   The Playhouse on Rodney Square will reopen in November and feature two beloved musicals, Riverdance’s 25th anniversary show and — hot stuff  — a musical featured Donna Summer’s disco tunes. The 108-year-old Playhouse, located in the Hotel Du Pont …