Fix bootstrap under jruby 1.7.0
Fix bootstrap under jruby 1.7.0

mirah/mirah,mirah/mirah,aspleenic/mirah,mirah/mirah,felixvf/mirah,aspleenic/mirah,uujava/mirah,uujava/mirah,aspleenic/mirah,aspleenic/mirah,KeenS/mirah,felixvf/mirah,mirah/mirah,uujava/mirah,KeenS/mirah,uujava/mirah,KeenS/mirah,uujava/mirah,felixvf/mirah,felixvf/mirah,aspleenic/mirah,KeenS/mirah