http://search.cpan.org/dist/PerlBuildSystem/licence.txt
I don't know the exact rules of CPAN regarding non-free licenses, so I'm not sure if this should be pulled. Unlike the Bantown license, it probably doesn't prevent CPAN from distributing it. OTOH, if there were a mirror at a .mil address, this could get tricky.
Just a heads up. -dave /*=================================================== VegGuide.Org www.BookIRead.com Your guide to all that's veg. My book blog ===================================================*/