freedups-v0.5.*.pl are a perl replacement for the bash freedups
(0.1-0.4) program.  By caching md5sums, working much more with inodes
instead of filenames, ignoring inodes which have no possibility of being
hardlinked, etc., they run much faster than the bash version, and get
faster still once they have a chance to cache some md5 checksums.

	I welcome feedback, and would especially like to know if you hit
any error cases that tell the program to abort.