mozilla/rust — pull request #9294 by wakandan (2013-09-18 15:30:52+00:00)
Title: remove use of "either" in rt.rs and followingly mod.rs

regarding #9157 (https://github.com/mozilla/rust/issues/9157) to remove "either", this is my first commit for rt.rs and mod.rs

Great help from https://github.com/huonw