Move mtio drive prep to a function, and makes the changer

check it's notion of access, avoiding problems on more tightly
coupled changers if the tape is already ejected - currently
these stupid devices return "Initialization Command Required"
sense codes but there is (as yet) no way to tell userland
that. checking the ACCESS changer flag appears safe in both
cases.

 Adds support for "voltag" type for the source for a move, so
you can do "chio move voltag 0003B72 drive 0" to move a tape
with the corresponding bar code.

Documents the above, as well as status -vVa in the man page.

partly from freebsd, man page tweaks by jmc@
ok krw@

0 files changed, 0 insertions, 0 deletions