Create ast/ and parsing/ subdirectories and move appropriate files

src/allocation-site-scopes.h

 // Copyright 2013 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_ALLOCATION_SITE_SCOPES_H_
 #define V8_ALLOCATION_SITE_SCOPES_H_
 
-#include "src/ast.h"
+#include "src/ast/ast.h"
 #include "src/handles.h"
 #include "src/objects.h"
 #include "src/zone.h"
 
 namespace v8 {
 namespace internal {
 
 
 // AllocationSiteContext is the base class for walking and copying a nested
 // boilerplate with AllocationSite and AllocationMemento support.
@@ skipping 73 matching lines @@
  private:
   Handle<AllocationSite> top_site_;
   bool activated_;
 };
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_ALLOCATION_SITE_SCOPES_H_