The $4.4 billion deal that will see Canadian firm Alimentation Couche-Tard take over San Antonio-based CST Brands Inc. officially closed Wednesday. The Quebec-based convenience store operator, which is best known for its Circle K locations in the U.S., was waiting for final approval from the Competition Bureau in Canada before the deal was complete. The acquisition of CST Brands also included a transaction with Parkland Fuel Corporation, who will be purchasing a majority of CST's Canadian assets...