build x86 with sse2/avx2 runtime detection #533

Job	Run time
Test install with generated cython files	46s
Test installation using newest version of Taskflow	28s
Test installation using system supplied libs	38s
Test sse2 code on Linux (gcc)	1m 45s
Python 3.7	46s
Python 3.7	3m 1s
Python 3.7	1m 26s
Python 3.8	55s
Python 3.8	2m 26s
Python 3.8	1m 20s
Python 3.9	55s
Python 3.9	2m 24s
Python 3.9	1m 12s
Python 3.10	54s
Python 3.10	2m 33s
Python 3.10	1m 46s
Python 3.11	1m 18s
Python 3.11	3m 5s
Python 3.11	1m 12s
	28m 50s

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