rust-lang/rust — pull request #15338 by pfalabella (2014-07-02 16:31:54+00:00)
Title: Rationals that have a 1 denom should print like ints

Tried squashing commits for https://github.com/rust-lang/rust/pull/15329, failed spectacularly.
This is a fresh PR for the same change.

@alexcrichton?