message: More macros to test for simd ISA
diff: // Macros to identify SIMD isa availability
  //
  +#define VSNRAY_NO_SIMD_ISA \
  + VSNRAY_SIMD_ISA__ == 0
  +
  +#define VSNRAY_SIMD_ISA_EQ(ISA) \
  + ISA - VSNRAY_BASE_ARCH >= 0 && \
  + ISA - VSNRAY_BASE_ARCH < 1000 && \
  + VSNRAY_SIMD_ISA__ == ISA
  +
  #define VSNRAY_SIMD_ISA_GE(ISA) \
  ISA - VSNRAY_BASE_ARCH >= 0 && \
  ISA - VSNRAY_BASE_ARCH < 1000 && \
  