message: At least put _mm_malloc hack in a local namespace
diff: #include <cstdlib>
  +namespace visionaray
  +{
  +
  inline void* _mm_malloc(size_t s, size_t aln)
  {
  return aligned_alloc(aln, s);
  @@ -30,6 +33,8 @@ inline void _mm_free(void* ptr)
  free(ptr);
  }
  +} // visionaray
  +
  #else
  #include <mm_malloc.h>
  #endif
  