* device-src/diskflat-device.c: Fix erase method.
* perl/Amanda/Changer.pm: Many new Amanda::Changer::Message.
* perl/Amanda/Label.pm: Allow to assign comment.
* perl/Amanda/Rest/Storages/Labels.pm: Allow to assign comment.
* installcheck/Amanda_Rest_Storages.pl: source_line change.
* installcheck/Amanda_Rest_Storages_Labels.pl: Check The
  storages/:STORAGE/labels endpoint.
* installcheck/Installcheck/Rest.pm: Allow DELETE, improive rest
  server startup.
* installcheck/Makefile.am: Add Amanda_Rest_Storages_Labels.


git-svn-id: https://svn.code.sf.net/p/amanda/code/amanda/trunk@5774 a8d146d6-cc15-0410-8900-af154a0219e0