copied /nltk/parse/featurelite.py up to /nltk/fs.py and wrote a wrapper class FS() to approximate the interface that we have with with the old/nltk/featurestructure.py
copied /nltk/parse/featurelite.py up to /nltk/fs.py and wrote a wrapper class FS() to approximate the interface that we have with with the old/nltk/featurestructure.py

svn/trunk@4660

nltk/nltk,nltk/nltk,nltk/nltk