Update project authors statements to Dartino

pkg/os/lib/system_macos.dart

-// Copyright (c) 2014, the Fletch project authors. Please see the AUTHORS file
+// Copyright (c) 2014, 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.
 
 part of os;
 
 class MacOSSystem extends PosixSystem {
   static final ForeignFunction _lseekMac = ForeignLibrary.main.lookup("lseek");
   static final ForeignFunction _openMac = ForeignLibrary.main.lookup("open");
 
   int get AF_INET6 => 30;
@@ skipping 24 matching lines @@
   MacOSSockAddrIn allocateSockAddrIn() {
     ForeignMemory buffer = new ForeignMemory.allocated(SOCKADDR_IN_SIZE);
     return new MacOSSockAddrIn(buffer, 0);
   }
 
   MacOSSockAddrIn6 allocateSockAddrIn6() {
     ForeignMemory buffer = new ForeignMemory.allocated(SOCKADDR_IN6_SIZE);
     return new MacOSSockAddrIn6(allocateSockAddrStorageMemory(), 0);
   }
 }