Update project authors statements to Dartino

src/vm/assembler_arm_macos.cc

-// Copyright (c) 2015, the Fletch project authors. Please see the AUTHORS file
+// 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.
 
 #if defined(FLETCH_TARGET_ARM) && defined(FLETCH_TARGET_OS_MACOS)
 
 #include <stdio.h>
 #include "src/vm/assembler.h"
 
 namespace fletch {
 
@@ skipping 12 matching lines @@
 
 void Assembler::DefineLong(const char* name) {
   printf("\t.long %s%s\n", kPrefix, name);
 }
 
 const char* Assembler::LabelPrefix() { return kPrefix; }
 
 }  // namespace fletch
 
 #endif  // defined(FLETCH_TARGET_ARM) && defined(FLETCH_TARGET_OS_MACOS)