JAMES IVORY Bil’s rating (out of 5): BB.5 United Kingdom, 1975.   Merchant Ivory Productions.   Screenplay by Ruth Prawer Jhabvala.   Cinematography by Walter Lassally.   Produced by Ismail Merchant.   Music by Vic Flick.   Production Design by Jacqueline Charriot-Lodwidge.   Film Editing by Humphrey Dixon.    Charming mini-movie from the team of Merchant Ivory is only an hour long…