By Brent Lang LOS ANGELES (TheWrap.com) – There are cracks in television’s glass ceiling, but it hasn’t shattered yet. Female show runners like Lena Dunham of “Girls” and Jenji Kohan of “Orange is the New Black” and “Weeds” are increasing the presence of women in the writers room, the editing bay and behind the camera, according to a new survey by the Center for the Study of Women in Television and Film at San Diego State University. …