* perl/Amanda/Changer/robot.pm: Return slot in error for:
        the requested volume is in drive $drive, which this
        changer instance cannot access
* perl/Amanda/Taper/Scan/traditional.pm: Continue scan if this error.
* perl/Amanda/Taper/Scribe.pm: log message.
* installcheck/Amanda_Taper_Scan_lexical.pl,
  installcheck/Amanda_Taper_Scan_oldest.pl,
  installcheck/Amanda_Taper_Scan_traditional.pl: Check it.


git-svn-id: https://amanda.svn.sourceforge.net/svnroot/amanda/amanda/trunk@5089 a8d146d6-cc15-0410-8900-af154a0219e0