Adding MRW functions #147

Job	Run time
build+test (linux, gfortran, openmp=yes, release=yes)	6m 24s
build+test (linux, gfortran, openmp=yes, release=no)	5m 8s
build+test (linux, gfortran, openmp=no, release=yes)	9m 0s
build+test (linux, gfortran, openmp=no, release=no)	8m 39s
build+test (linux, ifort, openmp=yes, release=yes)	13m 57s
build+test (linux, ifort, openmp=yes, release=no)	8m 42s
build+test (linux, ifort, openmp=no, release=yes)	16m 59s
build+test (linux, ifort, openmp=no, release=no)	12m 51s
build+test (macos, gfortran, openmp=yes, release=yes)	7m 6s
build+test (macos, gfortran, openmp=yes, release=no)	10m 36s
build+test (macos, gfortran, openmp=no, release=yes)	15m 23s
build+test (macos, gfortran, openmp=no, release=no)	13m 30s
build+test (macos, ifort, openmp=yes, release=yes)	11m 19s
build+test (macos, ifort, openmp=yes, release=no)	8m 12s
build+test (macos, ifort, openmp=no, release=yes)	17m 44s
build+test (macos, ifort, openmp=no, release=no)	11m 16s
benchmark (gfortran)	7m 17s
release	0s
benchmark (ifort)	6m 14s
	3h 10m 17s

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