crate-method-reexport-grrrrrrr.rs broken by recent (metadata?) changes

[msullivan]

The run-pass test crate-method-reexport-grrrrrrr.rs doesn't work any more. I'm pretty sure the culprit is @pcwalton's recent changes to metadata.

I xfail'd the test because the tree had been burning for a long time, but it should really be looked into.

[msullivan]

This may be in some way related to #3155, which is referenced in a FIXME in the test.

[catamorphism]

Works now.