Doug McMillon, the president and CEO of Walmart, represents the old-school big box retail, but he can easily pass off as someone who’s been a part of the startup universe for long. A rub-off effect perhaps of Flipkart, which Walmart has acquired for $16 billion after a prolonged negotiation cutting across many countries. McMillon spoke to employees of Flipkart in a townhall meeting soon after the deal wearing jeans and T-shirt with the embossed logo of the Bengaluru-based e-commerce company that it has just bagged. At a roundtable with editors on Thursday, Doug, as he’s popularly called, came similarly dressed,