cmake XERCES_HAVE_CPUID_INTRINSIC examples

apache/xerces-c cmake/XercesSSE2.cmake :65 

check_cxx_source_compiles("
#include <intrin.h>

int main() {
  int CPUInfo[4];
  __cpuid(CPUInfo, 1);
  return 0;
}"
    XERCES_HAVE_CPUID_INTRINSIC)