Ludicrously lavish and, by turns, lavishly ludicrous, “Krull” is a wonderfully wasteful, overindulgent high fantasy misfire that still manages to entertain even as it baffles and frustrates in equal measure. When The Beast’s star-travelling space fortress crashes onto the planet Krull, it interrupts the wedding of Prince Colwyn (Ken Marshall) and Princess Lysse (Lysette Anthony ..