Support ukfs magic paths. For example, this works now: golem> fsu_ls wd0.img%DISKLABEL:a% -ldiff -r1.16 -r1.17 othersrc/lib/libfsu_mount/fsu_mount.c
(pooka)
--- othersrc/lib/libfsu_mount/fsu_mount.c 1.16
+++ othersrc/lib/libfsu_mount/fsu_mount.c 1.17