By Caldwell Titcomb The scientist Spalanzani (tenor Neal Ferreira) strikes an unlikely deal with the nefarious inventor Coppélius (baritone Gaétan Laperrière) in the BLO’s fine production of “Tales of Hoffmann.” One of history’s most famous and beloved French operas wasn’t written by a native Frenchman. “The Tales of Hoffmann” came from the pen of Jacques…