convert atc library header files to C++ style

#include <cstdlib>

#include <iostream>

#include <string>

#include <stdio.h>

#include <cstdio>

// for macros

#include "MatrixDef.h"

#define ARRAY2D_H

#include <cstdlib>

#include <cstdio>

#include <string>

#include <iostream>

#include <cstdlib>

#include <stdio.h>

#include "Array.h"

#include <iostream>

#include <vector>

#include <math.h>

#include <cmath>

using ATC_Utility::command_line;

using ATC_Utility::str2dbl;

#include "Utility.h"

// Other headers

#include "math.h"

#include <cmath>

using ATC_Utility::dbl_geq;

using ATC_Utility::det3;

#include "KernelFunction.h"

#include "Utility.h"

#include "MPI_Wrappers.h"

#include <stdio.h>

#include <stdlib.h>

#include <cstdio>

#include <cstdlib>

#include <map>

#include <string>