Homebrew/homebrew — pull request #30081 by jacknagel (2014-06-12 00:16:45+00:00)
Title: Deprecate Pathname#cp and Pathname#chmod_R

As far as I can tell these methods have only ever been used in the test suite.

Since Formula includes FileUtils, it is generally simpler (and in the case of `cp`, more readable) to use the FileUtils methods directly.