order to allow your objects to generate unique cryptographic signatures.
The method used to generate the signature is based on Storable and
Digest::MD5. The object is fed to Storable::nfreeze to get a string,
which is then passed to Digest::MD5::md5_hex to get a unique 32
character hexidecimal signature.
WWW: http://search.cpan.org/dist/Object-Signature/
PR: ports/90918
Submitted by: Lars Balker Rasmussen <lars@balker.dk>
