Rename fletch -> dartino

tests/ffi/regress_252_test.dart

 // Copyright (c) 2015, 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.
 
 // Looking up a library should not make the symbols reachable from main lookup
 // unless we explicitly pass the global flag.
 
-import 'dart:fletch.ffi';
+import 'dart:dartino.ffi';
 import "package:expect/expect.dart";
 
 bool isArgumentError(e) => e is ArgumentError;
 
 void main() {
   var libPath = ForeignLibrary.bundleLibraryName('ffi_test_local_library');
   ForeignLibrary fl = new ForeignLibrary.fromName(libPath);
   Expect.throws(
       () => ForeignLibrary.main.lookup('memuint32'),
       isArgumentError);
 
   libPath = ForeignLibrary.bundleLibraryName('ffi_test_library');
   ForeignLibrary flGlobal = new ForeignLibrary.fromName(libPath, global: true);
   var memuint32 = ForeignLibrary.main.lookup('memuint32');
   var memory =
       new ForeignMemory.fromAddressFinalized(memuint32.pcall$0().address, 16);
   Expect.equals(memory.getUint32(0), 0);
   Expect.equals(memory.getUint32(4), 1);
   Expect.equals(memory.getUint32(8), 65536);
   Expect.equals(memory.getUint32(12), 4294967295);
 }