kes Implement a fix (more could be done) for bug #728 where a double
EOF is writing on the Volume when spooling is enabled and the
connection with the FD fails (FD crash, comm error).
kes Disable attempting to autolabel when polling and device is not
a tape. This fixes bug #730 where polling with a removable disk
not mounted caused lots of new Volumes to be created then marked
in error.