Make Runtime_Abort print to stderr instead of stdout.

src/checks.cc

 // Copyright 2006-2008 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 35 matching lines @@
     va_start(arguments, format);
     i::OS::VPrintError(format, arguments);
     va_end(arguments);
     i::OS::PrintError("\n#\n");
     i::OS::DumpBacktrace();
   }
   // First two times we may try to print a stack dump.
   if (fatal_error_handler_nesting_depth < 3) {
     if (i::FLAG_stack_trace_on_abort) {
       // Call this one twice on double fault
-      i::Isolate::Current()->PrintStack();
+      i::Isolate::Current()->PrintStack(stderr);
     }
   }
   i::OS::Abort();
 }
 
 
 void CheckEqualsHelper(const char* file,
                        int line,
                        const char* expected_source,
                        v8::Handle<v8::Value> expected,
@@ skipping 35 matching lines @@
 
 
 namespace v8 { namespace internal {
 
   bool EnableSlowAsserts() { return FLAG_enable_slow_asserts; }
 
   intptr_t HeapObjectTagMask() { return kHeapObjectTagMask; }
 
 } }  // namespace v8::internal