CANADA STOCKS-TSX steady as positive data offsets Iraq concerns

* TSX down 3.34 points, or 0.02 percent, at 15,105.63 * Six of the 10 main index sectors decline * Valeant slips after Allergan advises against deal * SNC climbs after acquisition move By John Tilak TORONTO, June 23 (Reuters) - Canada's main stock index was little changed on Monday as worries about political instability in Iraq were balanced by upbeat economic data from China and the United States. U.S. Secretary of State John Kerry met Iraqi Prime Minister Nuri al-Malik