ARM architecture support

[ghost]

You can try https://github.com/nemequ/simde for easy transfer of SSE / AVX instructions to ARM.

[junbaibai0719]

I edit the code build.py picohttpparser.c cpu_features.c

then,compile it in raspberry

and run it

but

[junbaibai0719]

Today, I finally know why I can't compile in arm. Because I didn't use -fsigned-char and simde didn't have _ mm_ cmpestri.