CANADA STOCKS-Energy shares pull TSX lower; BlackBerry jumps

* TSX down 77.43 points, or 0.52 percent, at 14,778.77 * Five of 10 main index sectors advance * Manulife slips after reporting results * BlackBerry surges on partnership with Samsung By John Tilak TORONTO, Nov 13 (Reuters) - Canada's benchmark stock index dropped on Thursday as sluggish economic data in China raised concerns about growth in the world's second-biggest economy and shares of energy producers tumbled with oil prices. But BlackBerry Ltd shot up 7.7 percent a