For techies of a certain age, few brands inspire as much nostalgia as Atari. They remember the heyday in the 1970s and 80s, when its two-dimensional arcade game Pong was the epitome of fun and the Atari 2600 video game console was the epitome of cool. But for many young gamers today, their closest brush with Atari is in the retro T-shirt section of their local Urban Outfitters. Fred Chesnais wants to change that. As Atari’s new CEO and majority shareholder, Chesnais is leading what he hopes will be a turnaround of the 42-year-old brand, which emerged from bankruptcy proceedings…