Move associated types into the Assoc space and add in the builtin bounds

from the definition (including Sized).

src/test/compile-fail/associated-types-unsized.rs

@@ -0,0 +1,24 @@
+// 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.
+
+#![feature(associated_types)]
+
+trait Get {
+    type Sized? Value;
+    fn get(&self) -> <Self as Get>::Value;
+}
+
+fn foo<T:Get>(t: T) {
+    let x = t.get(); //~ ERROR the trait `core::kinds::Sized` is not implemented
+}
+
+fn main() {
+}
+