Fixes two coding bugs in backup-manager-upload backup-manager-upload fails to gather a list of files from the FTP server in order to purge them. The error message from Perl is "Not an ARRAY reference". It also fails to find the archives for uploading because it uses `basename` on the full path without changing its working directory before.
Fix purging of remote archives via FTP or SSH Due to a refactoring upstram the additional export of BM_BMP_PATH in backup-manager script caused to invoke /usr/bin/backup-manager-purge/backup-manager-purge to purge the remote archives and failing.
