rubinius/rubinius — pull request #1722 by troessner (2012-05-14 10:16:53+00:00)
Title: Improve NameError message for Module#public_constant.

This PR improves on the error message for Module#public_constants which was introduced in this PR: https://github.com/rubinius/rubinius/pull/1720

cc & thanks @dbussink