Bring type variables into static scope, but produce compile-time error when they are used.

tests/language/type_parameter_test.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 class A<T> {
   Function closure;
   A._(this.closure);
 
   factory A() {
     return new A._(() => new Set<T>());
@@ skipping 38 matching lines @@
   Expect.isTrue(s is Set);
 
   s = ((new A<int>()).closure)();
   Expect.isTrue(s is Set<int>);
   Expect.isFalse(s is Set<double>);
 
   s = ((new A<int>.bar()).closure)();
   Expect.isTrue(s is Set<int>);
   Expect.isFalse(s is Set<double>);
 
-  A.staticMethod("not_null");
+  var x = A.staticMethod("not_null");
+  print(x);
   print(A.staticField);
 
   A.staticMethod2(null);
   print(A.staticField2);
 }