ref: e7b1c1aad896c131fb30b6b0836ff65a63a6eae3
parent: 1a751a59393ad696cdd7f6db882e3d0118e0b54e
author: qwx <devnull@localhost>
date: Sun Jul 15 02:31:45 EDT 2018
doom: use wadfs to expose music lumps launch wadfs after detecting main wad, exposing GENMIDI and music lumps under /mnt/wad. /bin/dmus can then use them directly, and wadfs doesn't need to be started manually.