Report if OpenMP is being used #54

Job	Run time
Linux build (openblas / static)	6m 52s
Linux build (openblas)	3m 58s
Mac build (accelerate)	2m 2s
Linux build (mkl)	4m 38s
Windows build (openblas)	3m 50s
Windows build openblas installed (mkl)	7m 31s
Windows build (mkl)	6m 53s
Mac build (accelerate / static)	3m 48s
	39m 32s

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