Removed reference to rack/request from rack_ext b/c it's not available
Removed reference to rack/request from rack_ext b/c it's not available

jruby/jruby-rack,jruby/jruby-rack,atambo/jruby-rack,jruby/jruby-rack,atambo/jruby-rack,jhstatewide/jruby-rack,janrain/jruby-rack,jruby/jruby-rack,jruby/jruby-rack,atambo/jruby-rack,janrain/jruby-rack,jhstatewide/jruby-rack,janrain/jruby-rack,jhstatewide/jruby-rack,atambo/jruby-rack,jhstatewide/jruby-rack,jruby/jruby-rack,janrain/jruby-rack