Fix kindck to consider inherited bounds

Author: nikomatsakis

src/test/compile-fail/kindck-inherited-copy-bound.rs

@@ -0,0 +1,30 @@
+// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// Test that Copy bounds inherited by trait are checked.
+
+use std::any::Any;
+use std::any::AnyRefExt;
+
+trait Foo : Copy {
+}
+
+impl<T:Copy> Foo for T {
+}
+
+fn take_param<T:Foo>(foo: &T) { }
+
+fn main() {
+    let x = box 3i;
+    take_param(&x); //~ ERROR does not fulfill `Copy`
+
+    let y = &x;
+    let z = &x as &Foo; //~ ERROR does not fulfill `Copy`
+}