mozilla/rust — pull request #11502 by jhasse (2014-01-12 19:28:29+00:00)
Title: Don't overwrite the options.output value from build_session_options

This is unnecessary and also leads to a bug: When the user specifies

```
#[crate_type = "rlib"];
```

rustpkg still creates a dylib.

Also it's good not to duplicate functionality. `build_session_options` handles this just fine.