Rename fletch -> dartino

tests/ffi/ffi_test.dart

 // Copyright (c) 2014, the Dartino 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.md file.
 
-import 'dart:fletch.ffi';
-import 'dart:fletch';
+import 'dart:dartino.ffi';
+import 'dart:dartino';
 import "package:expect/expect.dart";
 import "package:isolate/isolate.dart";
 
 bool isRangeError(e) => e is RangeError;
 bool isArgumentError(e) => e is ArgumentError;
 
 var freeFunc = ForeignLibrary.main.lookup('free');
 
 main() {
   // Not finalized, not immutable.
@@ skipping 589 matching lines @@
   Expect.equals(42, struct.getWord(struct.wordSize ~/ 2));
   struct64.setWord(4, 42);
   Expect.equals(42, struct64.getWord(4));
   struct32.setWord(2, 42);
   Expect.equals(42, struct32.getWord(2));
 
   struct.free();
   struct64.free();
   struct32.free();
 }