Rename fletch -> dartino

src/vm/thread_lk.h

 // 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.
 
 #ifndef SRC_VM_THREAD_LK_H_
 #define SRC_VM_THREAD_LK_H_
 
 #ifndef SRC_VM_THREAD_H_
 #error "Don't include thread_lk.h directly, include thread.h."
 #endif
 
 #include <kernel/thread.h>
 
-namespace fletch {
+namespace dartino {
 
 // A ThreadIdentifier represents a thread identifier for a thread.
 // The ThreadIdentifier does not own the underlying OS handle.
 // Thread handles can be used for referring to threads and testing equality.
 class ThreadIdentifier {
  public:
   ThreadIdentifier() : thread_(get_current_thread()) {}
 
   // Test for thread running.
   bool IsSelf() const { return thread_ == get_current_thread(); }
 
   void Join() {
     int retcode;
     thread_join(thread_, &retcode, INFINITE_TIME);
   }
 
  private:
   friend class Thread;
 
   explicit ThreadIdentifier(thread_t* thread) : thread_(thread) {}
 
   thread_t* thread_;
 };
 
-}  // namespace fletch
+}  // namespace dartino
 
 #endif  // SRC_VM_THREAD_LK_H_