Release of External Software Rendering for JPCSP

[onelight]

I just want a sse2/sse3 version

SSE2 and SSE3 builds are now available. There is not much performance difference with the SSE4.1
I've also included an AVX build, but there is no performance improvement as compared to the SSE4.1 build. To summarize:

• noSSE: slowest but contains no SSE code
  
• SSE2, SSE3, SSE4.1, AVX: average performance. Use the version best fitting your CPU
  
• AVX2: best performance but requires an Intel processor supporting AVX2
  

think you
I try SEE2,SEE3 version , but jpcsp close if 3d models is exist