swftools 6.x-2.1

Fix to prevent SWF Tools' playlist cache clearing mechanism from deleting all files at the top the file structure. This only occurs if you set the playlist directory to 'empty', so it uses the sites/default/files directory, which contains other uploaded files.

The current fix simply prevents the deletion from occurring, pending a better solution.

This bug was reported in #384876: Blank playlist directory: all files erased.