Copy libraries to prepare for move

pkg/compiler/lib/src/parser/partial_elements.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.
 
 library dart2js.parser.listener;
 
 import '../compiler.dart' show
     Compiler;
 import '../dart_types.dart' show DynamicType;
 import '../diagnostics/diagnostic_listener.dart';
@@ skipping 2653 matching lines @@
     }
     doParse(new Parser(listener));
   } on ParserError catch (e) {
     partial.hasParseError = true;
     return new ErrorNode(element.position, e.reason);
   }
   Node node = listener.popNode();
   assert(listener.nodes.isEmpty);
   return node;
 }