Add more include for stdint

#ifndef CANDIDATE_POSITION_GENERATING_CONFIG_H_

#define CANDIDATE_POSITION_GENERATING_CONFIG_H_

#include <stdint.h>

namespace chromap {

// This class holds the parameters to generate candidate position. Using the

#ifndef INDEX_UTILS_H_

#define INDEX_UTILS_H_

#include <stdint.h>

#include "khash.h"

// Note that the max kmer size is 28 and its hash value is always saved in the