dart2js: Rename old emitter to full emitter and make it its own library.

pkg/compiler/lib/src/js_emitter/lazy_emitter/emitter.dart

 // Copyright (c) 2014, 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.new_js_emitter.emitter;
 
 import 'package:js_runtime/shared/embedded_names.dart' show
     JsBuiltin,
     METADATA,
     TYPES;
@@ skipping 29 matching lines @@
       : this._compiler = compiler,
         this.namer = namer,
         _emitter = new ModelEmitter(compiler, namer, nativeEmitter);
 
   @override
   int emitProgram(ProgramBuilder programBuilder) {
     Program program = programBuilder.buildProgram();
     return _emitter.emitProgram(program);
   }
 
-  // TODO(floitsch): copied from OldEmitter. Adjust or share.
+  // TODO(floitsch): copied from full emitter. Adjust or share.
   @override
   bool isConstantInlinedOrAlreadyEmitted(ConstantValue constant) {
     return _emitter.isConstantInlinedOrAlreadyEmitted(constant);
   }
 
-  // TODO(floitsch): copied from OldEmitter. Adjust or share.
+  // TODO(floitsch): copied from full emitter. Adjust or share.
   @override
   int compareConstants(ConstantValue a, ConstantValue b) {
     return _emitter.compareConstants(a, b);
   }
 
   @override
   js.Expression constantReference(ConstantValue value) {
     return _emitter.generateConstantReference(value);
   }
 
@@ skipping 108 matching lines @@
         _compiler.internalError(NO_LOCATION_SPANNABLE,
                                 "Unhandled Builtin: $builtin");
         return null;
     }
   }
 
   @override
   void invalidateCaches() {
   }
 }