jirb_swing is not showing output

I tried to make this a little more pliable by replace hook_into_runtime_with_stream with:

``` ruby
      tar.hook_into_runtime(JRuby.runtime)
      $stdin = tar.input_stream.to_io
      out = tar.output_stream.to_io
      $stdout = out
      $stderr = out
```

output stream itself seems to not be working.  This is weirder than just native being an issue if I disable native it still does not work.
