ref: a653aac016c4f84bfaccd9b086a2736e3d7d79a4 dir: /appl/mkfile/
<../mkconfig DIRS=\ acme\ # alphabet\ charon\ cmd\ collab\ demo\ ebook\ grid\ lib\ math\ # mux\ spree\ svc\ tiny\ wm\ <$ROOT/mkfiles/mksubdirs