rustc: Switch to the new resolution pass

src/libsyntax/parse/comments.rs

@@ -9,6 +9,7 @@ export lit;
 export cmnt_style;
 export gather_comments_and_literals;
 export is_doc_comment, doc_comment_style, strip_doc_comment_decoration;
+export isolated, trailing, mixed, blank_line;
 
 enum cmnt_style {
     isolated, // No code on either side of each line of the comment