Ray, can you review this bug fix? Previously, one part of JsniRefLookup used a method signature without a return type, and a different part added the return type back. This could cause false ambiguities in method references.
This version consistently drops the return type. Now if a sub-interface and a super-interface have the same method with a different return type, it's not considered ambiguous to refer to that method. http://gwt-code-reviews.appspot.com/312801/show -- http://groups.google.com/group/Google-Web-Toolkit-Contributors
