quote_method! fails to parse attributes

[bgamari]

As of a few weeks ago quote_method! was able to parse attributes attached to a quoted method. Recently this fails with a syntax error,

$ rustc test.rs -L.
test.rs:4:1: 4:10 error: unexpected token: `#`
test.rs:4 ioregs!()
          ^~~~~~~~~

See example here.

[bgamari]

@pcwalton I suspect your commit 78a8418 is the culprit here as it removes a parse_outer_attributes from parse_method.