Update project authors statements to Dartino

src/shared/atomic_gcc_intrinsics.h

-// 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.
 
 #ifndef SRC_SHARED_ATOMIC_GCC_INTRINSICS_H_
 #define SRC_SHARED_ATOMIC_GCC_INTRINSICS_H_
 
 #ifndef SRC_SHARED_ATOMIC_H_
 #error Do not include atomic_gcc_intrinsics.h directly; use atomic.h instead.
 #endif
 
@@ skipping 96 matching lines @@
     return __atomic_fetch_sub(&value_, other, order);
   }
 
  private:
   T value_;
 };
 
 }  // namespace fletch
 
 #endif  // SRC_SHARED_ATOMIC_GCC_INTRINSICS_H_