The water in that glass Bill Gates is drinking from? It was poop once. The Microsoft founder is putting his support behind a game-changing innovation that turns feces into delicious, drinkable H20 and energy. It’s called the Omniprocessor, a steam-engine-powered machine that treats and boils feces, and ultimately turns that human excrement into liquid. As it turns out, poop and the way communities deal with it is a very important issue.Contaminated water kills roughly 700,000 children…