Update project authors statements to Dartino

src/vm/heap_validator.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.
 
 #include "src/vm/heap_validator.h"
 #include "src/vm/process.h"
 
 namespace fletch {
 
 void HeapPointerValidator::VisitBlock(Object** start, Object** end) {
   for (; start != end; start++) {
@@ skipping 44 matching lines @@
 
     HeapObjectPointerVisitor pointer_visitor(&validator);
     process->IterateRoots(&validator);
     process_heap->IterateObjects(&pointer_visitor);
     process_heap->VisitWeakObjectPointers(&validator);
     process->mailbox()->IteratePointers(&validator);
   }
 }
 
 }  // namespace fletch