Rename fletch -> dartino

src/vm/preempter.cc

 // Copyright (c) 2016, 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.
 
 #include "src/vm/preempter.h"
 
-namespace fletch {
+namespace dartino {
 
 // Global instance of preempter & preempter thread.
 Preempter* Preempter::preempter_ = NULL;
 ThreadIdentifier Preempter::preempter_thread_;
 
 static void *RunPreempterEntry(void *data) {
   Preempter* preempter = reinterpret_cast<Preempter*>(data);
   preempter->Run();
   return NULL;
 }
@@ skipping 66 matching lines @@
   preempt_monitor_->NotifyAll();
 }
 
 uint64 Preempter::GetNextPreemptTime() {
   // Wait 100 ms.
   uint64 now = Platform::GetMicroseconds();
   return now + 100 * 1000L;
 }
 
 
-}  // namespace fletch
+}  // namespace dartino