Made the month days table static const

  DATE_TIME

};

/* struct tm to time since epoch in GMT time zone */

/* struct tm to time since epoch in GMT time zone.

 * This is similar to the standard mktime function but for GMT only, and

 * doesn't suffer from the various bugs and portability problems that

 * some systems' implementations have.

 */

static time_t my_timegm(struct tm * tm)

{

  int month_days_cumulative [12] =

  static const int month_days_cumulative [12] =

    { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334 };

  int month, year, leap_days;