4e8d6a8 update to 2020.05.001 (ABI and API break)

Authored and Committed by rathann 3 years ago
    update to 2020.05.001 (ABI and API break)
    
    rebase patches and drop obsolete ones
    legacy API removed
    build only SSE3 and AVX SIMD kernels for x86 which should still work on 10yo machines
    disable VSX SIMD as the kernels are broken in this release
    
        
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