LAPACK with more pure procedures

A developer forked the fortran-lapack repository to make more procedures pure, enabling more of their R package translations to be designated pure. The purity analysis and refactoring were performed by GPT-5.6 Sol.

I forked fortran-lapack of @FedericoPerini to make more procedures pure, listed here, so that more of the procedures in my translations of R packages could be designated pure. The purity analysis and refactoring was done by GPT-5.6 Sol.