1. Added support for object printing for release mode using the...

src/v8utils.h

 // Copyright 2010 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // 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.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 24 matching lines @@
 
 // ----------------------------------------------------------------------------
 // I/O support.
 
 #if __GNUC__ >= 4
 // On gcc we can ask the compiler to check the types of %d-style format
 // specifiers and their associated arguments.  TODO(erikcorry) fix this
 // so it works on MacOSX.
 #if defined(__MACH__) && defined(__APPLE__)
 #define PRINTF_CHECKING
+#define FPRINTF_CHECKING
 #else  // MacOsX.
 #define PRINTF_CHECKING __attribute__ ((format (printf, 1, 2)))
+#define FPRINTF_CHECKING __attribute__ ((format (printf, 2, 3)))
 #endif
 #else
 #define PRINTF_CHECKING
+#define FPRINTF_CHECKING
 #endif
 
 // Our version of printf().
 void PRINTF_CHECKING PrintF(const char* format, ...);
+void FPRINTF_CHECKING PrintF(FILE* out, const char* format, ...);
 
 // Our version of fflush.
-void Flush();
+void Flush(FILE* out = stdout);
 
 
 // Read a line of characters after printing the prompt to stdout. The resulting
 // char* needs to be disposed off with DeleteArray by the caller.
 char* ReadLine(const char* prompt);
 
 
 // Read and return the raw bytes in a file. the size of the buffer is returned
 // in size.
 // The returned buffer must be freed by the caller.
@@ skipping 236 matching lines @@
   }
 #endif
   while (dest < limit) {
     *dest++ = static_cast<sinkchar>(*src++);
   }
 }
 
 } }  // namespace v8::internal
 
 #endif  // V8_V8UTILS_H_