* include/Makefile.am: Add new files.
* include/vaucanson/automata/implementation/iterators/delta_entry_iterator.hh,
* include/vaucanson/automata/implementation/iterators/delta_entry_iterator.hxx,
* include/vaucanson/automata/implementation/iterators/entry_iterator_base.hh,
* include/vaucanson/automata/implementation/iterators/entry_iterator_base.hxx,
* include/vaucanson/automata/implementation/iterators/rdelta_entry_iterator.hh,
* include/vaucanson/automata/implementation/iterators/rdelta_entry_iterator.hxx:
New. Interface & implementation.