French actor Gaspard Ulliel stars in a surprisingly classy prequel in the Hannibal Lecter saga. By Betsy Sherman Considering that the road from the 1991 movie “The Silence of the Lambs” to “Hannibal Rising” consists of a dreadfully over-the-top sequel (the 2001 “Hannibal”) and a decent remake (the 2002 “Red Dragon,” from a novel which…