Bazel

Merge pull request #647 from basnijholt/python-include-dir #1617

Job	Run time
Test with tcmalloc	4m 0s
Test with Bazel (avx, openmp)	4m 7s
Sanitizer tests (msan)	3m 12s
Test with Bazel (avx, nopenmp)	3m 36s
Sanitizer tests (asan)	4m 49s
Test with Bazel (sse, openmp)	3m 45s
Test with Bazel (sse, nopenmp)	3m 35s
Test with Bazel (basic, openmp)	3m 58s
Test with Bazel (basic, nopenmp)	3m 54s
	34m 56s

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