Create ast/ and parsing/ subdirectories and move appropriate files

src/parsing/preparse-data.h

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef V8_PREPARSE_DATA_H_
-#define V8_PREPARSE_DATA_H_
+#ifndef V8_PARSING_PREPARSE_DATA_H_
+#define V8_PARSING_PREPARSE_DATA_H_
 
 #include "src/allocation.h"
 #include "src/hashmap.h"
 #include "src/messages.h"
-#include "src/preparse-data-format.h"
+#include "src/parsing/preparse-data-format.h"
 
 namespace v8 {
 namespace internal {
 
 class ScriptData {
  public:
   ScriptData(const byte* data, int length);
   ~ScriptData() {
     if (owns_data_) DeleteArray(data_);
   }
@@ skipping 180 matching lines @@
 
 #ifdef DEBUG
   int prev_start_;
 #endif
 };
 
 
 }  // namespace internal
 }  // namespace v8.
 
-#endif  // V8_PREPARSE_DATA_H_
+#endif  // V8_PARSING_PREPARSE_DATA_H_