[Hax] Support simulating jruby on MRI 2.3
[Hax] Support simulating jruby on MRI 2.3

asutoshpalai/bundler,seanlinsley/bundler,bronzdoc/bundler,seanlinsley/bundler,mvz/bundler,bundler/bundler,bundler/bundler,dilumnavanjana/bundler,asutoshpalai/bundler,dilumnavanjana/bundler,mvz/bundler,RochesterinNYC/bundler,RochesterinNYC/bundler,bronzdoc/bundler