Starbucks on Wednesday reported that its quarterly same-store sales returned to growth for the first time in nearly two years, showing that its turnaround strategy is winning over lapsed customers.The coffee chain's global same-store sales rose 1%, lifted by international markets. Its U.S. same-store sales were flat for the quarter but turned positive in September. Wall Street was projecting global same-store sales declines of 0.3% and a 0.9% decrease in U.S. same-store sales."We're a year into our 'Back to ...