test_generate_bin_bindir_with_user_install_warning(TestGemInstaller)
fails on Windows with msys bash. It makes comparing paths
case-insensitive.
pick from upstream to fix a failure of test-all [ruby-core:47711]
c474edb2f3
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37048 b2dd03c8-39d4-4d8f-98ff-823fe69b080e