Log Message:
math/superlu: update to 6.0.1, build shared lib, fix BLAS usage

This now links against the correct BLAS and installs a shared lib, as is
more customary for us. Upstream Changes:

October 17, 2020   Version 5.2.2
    Applied a number of patches, merged a number of PRs.
Septtember 29, 2021   Version 5.3.0
    Added CI with github Actions.
    Applied a number of patches.
    Cleaned up warnings.
April 5, 2023   Version 6.0.0
    Add 64-bit indexing support and METIS ordering option.
August 5, 2023   Version 6.0.1
    Minor fixes, mostly documentation and clean up warnings