kes Attempt to correct problems with restores with autochangers and

kes  Attempt to correct problems with restores with autochangers and
     use counts going negative
kes  Rework SD status command and implement API for bat. Implements
     header, runing waitreservation, devices, volumes, spooling,
     and terminated status keywords.
     .status storage=xxx <keyword>
kes  Clarify TLS error message by adding double quotes around name.
kes  Simplify SD/FD status code by putting api flag in STATUS_PKT

git-svn-id: https://bacula.svn.sourceforge.net/svnroot/bacula/trunk@6569 91ce42f0-d328-0410-95d8-f526ca767f89