Reintroduce duplicate identifier detection in preparser.

src/dtoa.cc

-// Copyright 2010 the V8 project authors. All rights reserved.
+// Copyright 2011 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,
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 #include <math.h>
 
-#include "v8.h"
+#include "../include/v8stdint.h"
+#include "checks.h"
+#include "utils.h"
+
 #include "dtoa.h"
 
 #include "bignum-dtoa.h"
 #include "double.h"
 #include "fast-dtoa.h"
 #include "fixed-dtoa.h"
 
 namespace v8 {
 namespace internal {
 
@@ skipping 53 matching lines @@
   }
   if (fast_worked) return;
 
   // If the fast dtoa didn't succeed use the slower bignum version.
   BignumDtoaMode bignum_mode = DtoaToBignumDtoaMode(mode);
   BignumDtoa(v, bignum_mode, requested_digits, buffer, length, point);
   buffer[*length] = '\0';
 }
 
 } }  // namespace v8::internal