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fdfe14f1e1
Details: - Added sgemm and dgemm micro-kernels, which employ 256-bit AVX vectors and FMA instructions. (Complex support is currently provided by default induced method, 4m1a.) - Added a 'haswell' configuration, which uses the aforementioned kernels. - Inserted auto-detection support for haswell configuration in build/auto-detect/cpuid_x86.c. - Modified configure script to explicitly echo when automatic or manual configuration is in progress. - Changed beta scalar in test_gemm.c module of test suite to -1.0 to 0.9.