Create ast/ and parsing/ subdirectories and move appropriate files

src/parsing/preparser.h

 // Copyright 2012 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_PREPARSER_H
-#define V8_PREPARSER_H
+#ifndef V8_PARSING_PREPARSER_H
+#define V8_PARSING_PREPARSER_H
 
+#include "src/ast/scopes.h"
 #include "src/bailout-reason.h"
-#include "src/expression-classifier.h"
-#include "src/func-name-inferrer.h"
 #include "src/hashmap.h"
 #include "src/messages.h"
-#include "src/scanner.h"
-#include "src/scopes.h"
-#include "src/token.h"
+#include "src/parsing/expression-classifier.h"
+#include "src/parsing/func-name-inferrer.h"
+#include "src/parsing/scanner.h"
+#include "src/parsing/token.h"
 
 namespace v8 {
 namespace internal {
 
 
 enum FunctionNameValidity {
   kFunctionNameIsStrictReserved,
   kSkipFunctionNameCheck,
   kFunctionNameValidityUnknown
 };
@@ skipping 4226 matching lines @@
       *ok = false;
       return;
     }
     has_seen_constructor_ = true;
     return;
   }
 }
 }  // namespace internal
 }  // namespace v8
 
-#endif  // V8_PREPARSER_H
+#endif  // V8_PARSING_PREPARSER_H