Rename fletch -> dartino

src/vm/native_interpreter.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_NATIVE_INTERPRETER_H_
 #define SRC_VM_NATIVE_INTERPRETER_H_
 
 #include "src/shared/bytecodes.h"
 
-namespace fletch {
+namespace dartino {
 
 class Process;
 class TargetYieldResult;
 
 // For the platforms that have a native interpreter this function is
 // generated as the native interpreter entry point. The native
 // interpreter can bailout to the slower C++ interpreter by returning
 // -1.
 extern "C" int Interpret(Process* process,
                          TargetYieldResult* target_yield_result);
 
 extern "C" void InterpreterEntry();
 
 extern "C" void InterpreterCoroutineEntry();
 
 extern "C" void InterpreterMethodEntry();
 
 
 void SetBytecodeBreak(Opcode opcode);
 
 void ClearBytecodeBreak(Opcode opcode);
 
-}  // namespace fletch
+}  // namespace dartino
 
 #endif  // SRC_VM_NATIVE_INTERPRETER_H_