Store resolved library prefix in unresolved class object in order not to repeat

tests/language/src/FunctionTypeAlias3Test.dart

Index: tests/language/src/FunctionTypeAlias3Test.dart
===================================================================
--- tests/language/src/FunctionTypeAlias3Test.dart	(revision 0)
+++ tests/language/src/FunctionTypeAlias3Test.dart	(revision 0)
@@ -0,0 +1,28 @@
+// Copyright (c) 2011, 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.
+//
+// Dart test for function type alias with an imported result type that happens
+// to have the same name as a type parameter.
+
+#library("main");
+#import("library11.dart", prefix : "lib11");
+
+typedef lib11.Library111<Library111>
+    F<Library111>(lib11.Library111<Library111> a, Library111 b);
+
+class A<T> {
+  T foo(T a, bool b) {
+  }
+}
+
+main() {
+  var a = new A<lib11.Library111<bool>>();
+  var b = new A<lib11.Library111<int>>();
+  Expect.isTrue(a.foo is F);
+  Expect.isTrue(a.foo is F<bool>);
+  Expect.isTrue(a.foo is !F<int>);
+  Expect.isTrue(b.foo is F);
+  Expect.isTrue(b.foo is !F<bool>);
+  Expect.isTrue(a.foo is !F<int>);
+}