Make the preparser standalone library and process build in debug mode.

src/preparser.cc

 // Copyright 2010 the V8 project authors. All rights reserved.
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 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
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 //       with the distribution.
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 //
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-#include "v8.h"
-
-/*
-TODO(isolates): I incldue v8.h instead of these because we need Isolate and 
-some classes (NativeAllocationChecker) are moved into isolate.h 
 #include "../include/v8stdint.h"
 #include "unicode.h"
 #include "globals.h"
 #include "checks.h"
 #include "allocation.h"
 #include "utils.h"
 #include "list.h"
-*/
 
 #include "scanner-base.h"
 #include "preparse-data.h"
 #include "preparser.h"
 
 namespace v8 {
 namespace preparser {
 
 // Preparsing checks a JavaScript program and emits preparse-data that helps
 // a later parsing to be faster.
@@ skipping 1151 matching lines @@
 }
 
 bool PreParser::peek_any_identifier() {
   i::Token::Value next = peek();
   return next == i::Token::IDENTIFIER ||
          next == i::Token::FUTURE_RESERVED_WORD;
 }
 
 #undef CHECK_OK
 } }  // v8::preparser