CNN is separating its commissioned and acquired documentary films by placing the latter in a new venture, “CNN Films Presents.” “CNN Films,” which was launched in October 2012, was previously the network’s brand for both acquired or commissioned documentary features, following their exhibitions in theaters. But with the launch of CNN Films Presents, the types of docs will be segmented. Going forward, all CNN Films Presents broadcasts will be acquired films. The new brand will also be distinguished from CNN Films in that its documentaries will not be projects that originally debut on television. See video: CNN’s Anderson Cooper,...