Pamela Barbaglia, Gwénaëlle Barzic (Adds details of takeover proposal, context) LONDON/PARIS, Jan 15 (Reuters) - Canada’s Alimentation Couche-Tard has dropped its 16.2 billion euro ($19.6 billion) bid to acquire European retailer Carrefour SA after the takeover plan ran into stiff opposition from the French government, two sources familiar with the matter told Reuters on Friday. The decision to end merger talks came after a meeting on Friday between French Finance Minister Bruno Le Maire and Couche-Tard’s founder and chairman, Alain Bouchard, the sources said, speaking on condition of a...