Description

Updated Perl minimum requirement to version 5.8, since we specified 5.005, but used newer syntax (5.8)

Actually addresses an unreported issue of the minimum requirement not being correct.

Minor improvement

Please delete options that are not relevant.

[ ] Bug fix (non-breaking change which fixes an issue)
[ ] New feature (non-breaking change which adds functionality)
[X] Breaking change (fix or feature that would cause existing functionality to not work as expected)
[X] This change requires a documentation update

[ ] My code follows the style guidelines of this project
[ ] I have performed a self-review of my own code
[ ] I have commented my code, particularly in hard-to-understand areas
[ ] I have made corresponding changes to the documentation
[X] My changes generate no new warnings
[ ] I have added tests that prove my fix is effective or that my feature works
[X] New and existing unit tests pass locally with my changes
[ ] Any dependent changes have been merged and published in downstream modules
[ ] Changes have been manually tested (please provide information on test platform using the fields below)