Move Full-codegen into its own folder.

src/full-codegen/full-codegen.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_FULL_CODEGEN_H_
-#define V8_FULL_CODEGEN_H_
+#ifndef V8_FULL_CODEGEN_FULL_CODEGEN_H_
+#define V8_FULL_CODEGEN_FULL_CODEGEN_H_
 
 #include "src/v8.h"
 
 #include "src/allocation.h"
 #include "src/assert-scope.h"
 #include "src/ast.h"
 #include "src/bit-vector.h"
 #include "src/code-stubs.h"
 #include "src/codegen.h"
 #include "src/compiler.h"
@@ skipping 1062 matching lines @@
   static const int kEntrySize = 3 * kIntSize;
 
   Address start_;
   Address instruction_start_;
   uint32_t length_;
 };
 
 
 } }  // namespace v8::internal
 
-#endif  // V8_FULL_CODEGEN_H_
+#endif  // V8_FULL_CODEGEN_FULL_CODEGEN_H_