Include what you use for the preparser.

src/preparser.cc

Index: src/preparser.cc
diff --git a/src/preparser.cc b/src/preparser.cc
index b36f4faca423e7254d5373d1c7f0d15e73ad6280..ab67bae7eefca2f35b9469685bcf48558fccb063 100644
--- a/src/preparser.cc
+++ b/src/preparser.cc
@@ -1,4 +1,4 @@
-// Copyright 2011 the V8 project authors. All rights reserved.
+// Copyright 2012 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:
@@ -25,21 +25,15 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-#include <math.h>
-
-#include "../include/v8stdint.h"
+#include "preparser.h"
 
-#include "allocation.h"
+#include <math.h>
+#include <string.h>
 #include "checks.h"
 #include "conversions.h"
-#include "conversions-inl.h"
 #include "globals.h"
 #include "hashmap.h"
-#include "list.h"
-#include "preparse-data-format.h"
 #include "preparse-data.h"
-#include "preparser.h"
-#include "unicode.h"
 #include "utils.h"
 
 namespace v8 {