rustc: Add an "ne" method to the Eq trait, and implement it everywhere

src/libsyntax/parse/parser.rs

@@ -3626,6 +3626,7 @@ impl restriction : cmp::Eq {
     pure fn eq(&&other: restriction) -> bool {
         (self as uint) == (other as uint)
     }
+    pure fn ne(&&other: restriction) -> bool { !self.eq(other) }
 }
 
 //