rspec/rspec-support — pull request #66 by myronmarston (2014-05-20 05:17:32+00:00)
Title: Improve how we detect module prepend support.

JRuby 1.7.4+ has experimental ruby 2.0 support,
and reports `RUBY_VERSION` as 2.0 when run with
`JRUBY_OPTS='--2.0'` but does not support module
prepends.

Fixes rspec/rspec-mocks#672.