no-sse2 patch: Only enable SSE2 in wsola-internal.cc if __SSE2__
    
    Runtime detection would be nice to have, but for now this is the same
    state as in 5.8. NEON is also not runtime-detected there. The x86_64 and
    aarch64 builds will get the SIMD optimizations, the i686 and armv7hl
    ones won't for now.