Fix dtoa for the LP64 model on 64-bit systems, where long is 64 bits

src/third_party/dtoa/dtoa.c

 /****************************************************************
  *
  * The author of this software is David M. Gay.
  *
  * Copyright (c) 1991, 2000, 2001 by Lucent Technologies.
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose without fee is hereby granted, provided that this entire notice
  * is included in all copies of any software which is or includes a copy
  * or modification of this software and in all copies of the supporting
@@ skipping 146 matching lines @@
  *      inexact bit is already set, and clear_inexact() sets the
  *      inexact bit to 0.  When SET_INEXACT is #defined, strtod
  *      also does extra computations to set the underflow and overflow
  *      flags when appropriate (i.e., when the result is tiny and
  *      inexact or when it is a numeric value rounded to +-infinity).
  * #define NO_ERRNO if strtod should not assign errno = ERANGE when
  *      the result overflows to +-Infinity or underflows to 0.
  */
 
 #ifndef Long
+#if __LP64__
+#define Long int
+#else
 #define Long long
 #endif
+#endif
 #ifndef ULong
 typedef unsigned Long ULong;
 #endif
 
 #ifdef DEBUG
 #include "stdio.h"
 #define Bug(x) {fprintf(stderr, "%s\n", x); exit(1);}
 #endif
 
 #include "stdlib.h"
@@ skipping 3142 matching lines @@
         Bfree(b);
         *s = 0;
         *decpt = k + 1;
         if (rve)
                 *rve = s;
         return s0;
         }
 #ifdef __cplusplus
 }
 #endif