bundler/bundler — pull request #3328 by myabc (2014-12-30 14:07:43+00:00)
Title: Ruby 2.2: support mri_22, (x64_)mingw_22 as platform options

Bundler 1.7.10 only supports `:ruby_22` as platform. `mri_22`, `x64_mingw`, `x64_mingw_22` are unregonised still. This appears to be an omission in #3309 (and also #3189).