Changes to handle unresolved qualified identifiers.

tests/language/src/Prefix15Test.dart

+// 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.
+//
+// Use qualified symbols with generics at various places.
+
+#library("Prefix15Test.dart");
+#import("library12.dart", prefix:"lib12");
+
+typedef T myFunc<T>(T param);
+
+class myInterface<T> implements lib12.Library12Interface {
+  myInterface(T this.myfld);
+  T addObjects(T value1, T value2) {
+    myfld.fld = (value1.fld + value2.fld + myfld.fld);
+    return myfld;
+  }
+  T myfld;
+}
+
+class myClass2<T> {
+  myClass2(T this.fld2);
+  T func(T val) => val;
+  T fld2;
+}
+
+main() {
+  var o = new myClass2<lib12.Library12>(new lib12.Library12(100));
+  myFunc<lib12.Library12> func = o.func;
+  Expect.equals(2, func(new lib12.Library12(10)).func());
+  Expect.equals(10, func(new lib12.Library12(10)).fld);
+
+  o = new myClass2<lib12.Library12>(new lib12.Library12(200));
+  Expect.equals(2, o.fld2.func());
+  Expect.equals(200, o.fld2.fld);
+
+  o = new myInterface<lib12.Library12>(new lib12.Library12(100));
+  Expect.equals(2, o.myfld.func());
+  Expect.equals(100, o.myfld.fld);
+  o = o.addObjects(new lib12.Library12(200), new lib12.Library12(300));
+  Expect.equals(2, o.func());
+  Expect.equals(600, o.fld);
+}