Bug fix

ANodeIt/BNodeIt should not be inherited from ANode/BNode

The reason:
assert(graph.id(ANodeIt(graph)) == graph.id((Node)ANodeIt(graph)));

 lemon (0.5-1) unstable; urgency=low

   * Initial Release.

  -- LEMON Development Team <etik-ol@cs.elte.hu>  Tue, 14 Jun 2005 08:29:34 +0200