Internal Program Version: Sort::Versions  1.62.5.42.0

Sort::Versions allows easy sorting of mixed non-numeric and numeric
strings, like the 'version numbers' that many shared library systems and
revision control packages use. This is quite useful if you are trying to
deal with shared libraries. It can also be applied to applications that
intersperse variable-width numeric fields within text. Other applications
can undoubtedly be found.

http://search.cpan.org/dist/Sort-Versions