Create ast/ and parsing/ subdirectories and move appropriate files

src/parsing/preparse-data-format.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_FORMAT_H_
-#define V8_PREPARSE_DATA_FORMAT_H_
+#ifndef V8_PARSING_PREPARSE_DATA_FORMAT_H_
+#define V8_PARSING_PREPARSE_DATA_FORMAT_H_
 
 namespace v8 {
 namespace internal {
 
 // Generic and general data used by preparse data recorders and readers.
 
 struct PreparseDataConstants {
  public:
   // Layout and constants of the preparse data exchange format.
   static const unsigned kMagicNumber = 0xBadDead;
@@ skipping 14 matching lines @@
   static const int kMessageTemplatePos = 4;
   static const int kMessageArgPos = 5;
 
   static const unsigned char kNumberTerminator = 0x80u;
 };
 
 
 }  // namespace internal
 }  // namespace v8.
 
-#endif  // V8_PREPARSE_DATA_FORMAT_H_
+#endif  // V8_PARSING_PREPARSE_DATA_FORMAT_H_