- Fixed bug in AbstractLazySequence.__cmp__ - Improved efficiency of LazyMap.iterate_from(), esp when   applied to lazy subsequences.
- Fixed bug in AbstractLazySequence.__cmp__
- Improved efficiency of LazyMap.iterate_from(), esp when
  applied to lazy subsequences.


svn/trunk@6287

nltk/nltk,nltk/nltk,nltk/nltk