Rename fletch -> dartino

src/vm/assembler_x64.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_ASSEMBLER_X64_H_
 #define SRC_VM_ASSEMBLER_X64_H_
 
 #ifndef SRC_VM_ASSEMBLER_H_
 #error Do not include assembler_x64.h directly; use assembler.h instead.
 #endif
 
 #include "src/shared/assert.h"
 #include "src/shared/utils.h"
 
-namespace fletch {
+namespace dartino {
 
 extern const char* kLocalLabelPrefix;
 
 enum Register {
   RAX = 0,
   RCX = 1,
   RDX = 2,
   RBX = 3,
   RSP = 4,
   RBP = 5,
@@ skipping 326 matching lines @@
   // wrapper too.
   Register Wrap(Register reg) { return reg; }
   const Address* Wrap(const Address& address) { return &address; }
   const Immediate* Wrap(const Immediate& immediate) { return &immediate; }
 };
 
 #undef INSTRUCTION_0
 #undef INSTRUCTION_1
 #undef INSTRUCTION_2
 
-}  // namespace fletch
+}  // namespace dartino
 
 #endif  // SRC_VM_ASSEMBLER_X64_H_