Log error if buffer is too small on receiving HUP

If re-config of library and many more slots added, it is possible
the allocated buffer to return READ ELEMENT STATUS will overflow.

Log error recommeding restart of daemon.

Signed-off-by: Mark Harvey <markh794@gmail.com>
Set POWER-ON/RESET sense on receiving a HUP

If rereading config via HUP, set POWER-ON/RESET sense code.
Mark library offline during the process of re-reading config.

Signed-off-by: Mark Harvey <markh794@gmail.com>
Add NetBackup Vault helper script

Script posted by Eric Engberg via forum.
http://mhvtl-linux-virtual-tape-library-community-forums.966029.n3.nabble.com/vlt-endeject-notify-perl-script-for-netbackup-tp4025284.html

Provided as is..

Signed-off-by: Mark Harvey <markh794@gmail.com>
Simplify printf statements for writable/non-writable condition

Signed-off-by: Mark Harvey <markh794@gmail.com>
Rollup 0xb0 - 0xbf into default 'illegal_op'

Signed-off-by: Mark Harvey <markh794@gmail.com>
Personality module: DLT7000/8000 do not support SPR

Unregister support for SCSI Persistent Reservation for DLT7000
and DLT8000 emulation..

Signed-off-by: Mark Harvey <markh794@gmail.com>
Remove Persistent Reservation support from default drive type

Signed-off-by: Mark Harvey <markh794@gmail.com>
Code cleanup of personality modules

Signed-off-by: Mark Harvey <markh794@gmail.com>
Register PERSISTENT RESERVATION & SECURITY PROTOCOL OP codes

 - Define support in personality module for support of the OP code
 - personality_module_register() then adds the default op code if
feature is set

Signed-off-by: Mark Harvey <markh794@gmail.com>