Remove Gay's dtoa from sources.

src/dtoa-config.c

-/*
- * Copyright 2007-2008 the V8 project authors. All rights reserved.
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- *     * Redistributions of source code must retain the above copyright
- *       notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above
- *       copyright notice, this list of conditions and the following
- *       disclaimer in the documentation and/or other materials provided
- *       with the distribution.
- *     * Neither the name of Google Inc. nor the names of its
- *       contributors may be used to endorse or promote products derived
- *       from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-/**
- * Dtoa needs to have a particular environment set up for it so
- * instead of using it directly you should use this file.
- *
- * The way it works is that when you link with it, its definitions
- * of dtoa, strtod etc. override the default ones.  So if you fail
- * to link with this library everything will still work, it's just
- * subtly wrong.
- */
-
-#if !(defined(__APPLE__) && defined(__MACH__)) && \
-    !defined(WIN32) && !defined(__FreeBSD__) && !defined(__OpenBSD__) && \
-    !defined(__sun)
-#include <endian.h>
-#endif
-#include <math.h>
-#include <float.h>
-
-/* The floating point word order on ARM is big endian when floating point
- * emulation is used, even if the byte order is little endian */
-#if !(defined(__APPLE__) && defined(__MACH__)) && !defined(WIN32) && \
-    !defined(__FreeBSD__) && !defined(__OpenBSD__) && !defined(__sun) && \
-    __FLOAT_WORD_ORDER == __BIG_ENDIAN
-#define  IEEE_MC68k
-#else
-#define  IEEE_8087
-#endif
-
-#define __MATH_H__
-#if defined(__APPLE__) && defined(__MACH__) || defined(__FreeBSD__) || \
-    defined(__OpenBSD__) || defined(__sun)
-/* stdlib.h on FreeBSD and Apple's 10.5 and later SDKs will mangle the
- * name of strtod.  If it's included after strtod is redefined as
- * gay_strtod, it will mangle the name of gay_strtod, which is
- * unwanted. */
-#include <stdlib.h>
-
-#endif
-/* stdlib.h on Windows adds __declspec(dllimport) to all functions when using
- * the DLL version of the CRT (compiling with /MD or /MDd). If stdlib.h is
- * included after strtod is redefined as gay_strtod, it will add
- * __declspec(dllimport) to gay_strtod, which causes the compilation of
- * gay_strtod in dtoa.c to fail.
-*/
-#if defined(WIN32) && defined(_DLL)
-#include "stdlib.h"
-#endif
-
-/* For MinGW, turn on __NO_ISOCEXT so that its strtod doesn't get added */
-#ifdef __MINGW32__
-#define __NO_ISOCEXT
-#endif  /* __MINGW32__ */
-
-/* On 64-bit systems, we need to make sure that a Long is only 32 bits. */
-#ifdef V8_TARGET_ARCH_X64
-#define Long int
-#endif /* V8_TARGET_ARCH_X64 */
-
-/* Make sure we use the David M. Gay version of strtod(). On Linux, we
- * cannot use the same name (maybe the function does not have weak
- * linkage?). */
-#define strtod gay_strtod
-#include "third_party/dtoa/dtoa.c"