fix compile errors under windows

[xubury]

In windows unsigned long is 32bit which is illegal for a pointer to cast to. So change unsigned long to uintptr_t fix the compile errors.

[xubury]

However, Windows build failed testing while Ubuntu works perfectly. I think it is related to https://github.com/dthuerck/mapmap_cpu/issues/22. It have segmentation fault while executing _mm256_setzero_ps. I am not familiar with libtbb. But I do a simple tested on _mm256_setzero_ps and didn't got the segfault.

#include <tbb/tbb.h>
#include <iostream>
int main() {
    __m256 yfsSum = _mm256_setzero_ps();
    std::cout << "hello" << std::endl;
}