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[alexcrichton]

This notably contains the extern mod => extern crate change.

Closes #9880

[lilyball]

Rather odd error, and the span is off too:

src/test/run-pass/issue-8860.rs:13:12: 13:17 error: `extern crate` is obsolete, use `extern crate` instead to refer to external crates.
src/test/run-pass/issue-8860.rs:13 extern mod green;
                                              ^~~~~

[flaper87]

Looks like the s/extern mod/extern crate/ replacement changed the error message.