There’s something to be said for giving even tiny tykes a good, old-fashioned fright in the name of good, clean fun. But Disney’s “Maleficent” still feels like a sour miscalculation on somebody’s part. A dark, gloomy and quite violent riff on the “Sleeping Beauty” fairytale, this time seen through the eyes of the evil fairy who put this beauty under a curse, it’s a lovely-looking thing with most of the joy left out.