Thanks for the report. Apparently the file in question has been in the distribution since before I was maintainer. I plan on a scrub and re-release with CPAN/backpan clean up as suggested.
Add PDL-2.019 release to news.
Update Changes for PDL-2.019 release
Update Known_problems with GH and SF info
Update VERSION to 2.019 for final release preparation
Update VERSION to 2.018_02 for rc1 for PDL-2.019
Update MANIFEST for PDL devel release
Fix MatrixOps det to use cached lu_decomp