kclient: make /debug/ceph/client#/mdsc filenames work, cleanup
kclient: make /debug/ceph/client#/mdsc filenames work, cleanup

Just print #ino/path for dentries, since that's what goes over the
wire.

ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph