Update project authors statements to Dartino

src/tools/driver/platform_linux.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_OS_LINUX)
 
 #include <string.h>
 #include <unistd.h>
 #include <sys/signalfd.h>
 #include <sys/types.h>
 #include <sys/wait.h>
@@ skipping 87 matching lines @@
     raise(-exit_code);
   } else {
     exit(exit_code);
   }
   UNREACHABLE();
 }
 
 }  // namespace fletch
 
 #endif  // defined(FLETCH_TARGET_OS_LINUX)