CANADA STOCKS-TSX gains as Valeant, CIBC jump on results

* TSX rises 25.77 points, or 0.18 percent, to 14,214.35 * Seven of 10 main index sectors advance * Valeant, CIBC, TD climb after quarterly results * Catamaran Corp tumbles after results, outlook By John Tilak TORONTO, Feb 27 (Reuters) - Canada's main stock index climbed on Thursday, boosted by advances in shares of Valeant Pharmaceuticals International Inc and Canadian Imperial Bank of Commerce after the companies reported quarterly results. CIBC shares gained 1 percent