Re/code: Yahoo’s media unit is seeing a major shake-up, with changes including the departure of Kathy Savitt, its top manager. Savitt, who is also the CMO of the company, is joining STX Entertainment, a “fully-integrated motion picture, television, and digital content studio,” and will run its digital operations. Sources say the move is part of a larger — and troubling — exodus of top execs from all over Yahoo.