Deactivate OpenMP multithreading during MUMPS factorization#147

julianlitz wants to merge 6 commits intomainSciCompMod/GMGPolar:mainfrom

146-mumps-factorization-fails-with-versions-551-when-using-openmp-multithreadingSciCompMod/GMGPolar:146-mumps-factorization-fails-with-versions-551-when-using-openmp-multithreadingCopy head branch name to clipboard