auto merge of #430 : aochagavia/cargo/mod, r=alexcrichton
authorbors <bors@rust-lang.org>
Sun, 24 Aug 2014 20:59:09 +0000 (20:59 +0000)
committerbors <bors@rust-lang.org>
Sun, 24 Aug 2014 20:59:09 +0000 (20:59 +0000)
Example:

```
use std::fmt;
use std::fmt::Show;
```

becomes

```
use std::fmt::{mod, Show};
```


Trivial merge