Fix to support LLVM/ruby that ships with Xcode 5.1
Merge pull request #577 from seanknox/fix-xcode51-ruby

Fix to support LLVM/ruby that ships with Xcode 5.1
Merge branch 'refs/heads/our-boxen'

* refs/heads/our-boxen:
  Fix to support LLVM/ruby that ships with Xcode 5.1