fixes #157, renaming local library identifiers if needed.

lib/runtime/dart/_native_typed_data.js

-var _native_typed_data;
-(function(exports) {
+var _native_typed_data = dart.defineLibrary(_native_typed_data, {});
+var core = dart.import(core);
+var typed_data = dart.lazyImport(typed_data);
+var collection = dart.import(collection);
+var _internal = dart.import(_internal);
+var _interceptors = dart.lazyImport(_interceptors);
+var _js_helper = dart.lazyImport(_js_helper);
+var math = dart.import(math);
+(function(exports, core, typed_data, collection, _internal, _interceptors, _js_helper, math) {
   'use strict';
   class NativeByteBuffer extends core.Object {
     NativeByteBuffer() {
       this.lengthInBytes = null;
     }
     get runtimeType() {
       return typed_data.ByteBuffer;
     }
     asUint8List(offsetInBytes, length) {
       if (offsetInBytes === void 0)
@@ skipping 1535 matching lines @@
   exports.NativeInt16List = NativeInt16List;
   exports.NativeInt32List = NativeInt32List;
   exports.NativeInt8List = NativeInt8List;
   exports.NativeUint16List = NativeUint16List;
   exports.NativeUint32List = NativeUint32List;
   exports.NativeUint8ClampedList = NativeUint8ClampedList;
   exports.NativeUint8List = NativeUint8List;
   exports.NativeFloat32x4 = NativeFloat32x4;
   exports.NativeInt32x4 = NativeInt32x4;
   exports.NativeFloat64x2 = NativeFloat64x2;
-})(_native_typed_data || (_native_typed_data = {}));
+})(_native_typed_data, core, typed_data, collection, _internal, _interceptors, _js_helper, math);