emacs-dired-du 0.5.2 Dired with recursive directory sizes

Display the recursive size of directories in Dired. This file defines a minor mode dired-du-mode to show the recursive size of directories in Dired buffers. If du program is available, then the directory sizes are obtained with it. Otherwise, the directory sizes are obtained with Lisp. The former is faster and provide a more precise value. For directories where the user doesn't have read permission, the recursive size is not obtained. Once this mode is enabled, every new Dired buffer displays recursive dir sizes.