* device-src/s3-device.c (delete_file): Check for no objects.
* installcheck/Amanda_Device.pl: Use different bucket name for each
  test.


git-svn-id: https://svn.code.sf.net/p/amanda/code/amanda/branches/3_3@5507 a8d146d6-cc15-0410-8900-af154a0219e0