Fix --version spec on JRuby by using ruby_install_name
Fix --version spec on JRuby by using ruby_install_name

idibon/warbler,ctreatma/warbler,mkristian/warbler,ctreatma/warbler,fedenusy/warbler,ctreatma/warbler,atambo/warbler,idibon/warbler,fedenusy/warbler,idibon/warbler,mkristian/warbler,fedenusy/warbler,fedenusy/warbler,mkristian/warbler,atambo/warbler,ctreatma/warbler,idibon/warbler