0.57 - fixed -f to really allow crawling symlinks.
	- The following command can now be used to recreate the logfile (and retry more unpacking)
	  in $DIR:
	  file_unpack -D $DIR -f -L $DIR.unpack.log $DIR
	- _run_mime_helper(): cleanup $jail_base added when cmd fails to run.
	  Helper failure may still may result in missing files.
	- t/07-cmdline.t added.