Added stemming function and changed existing functions a bit# Please en...

...ter the commit message for your changes. Lines starting
# with '#' will be ignored, and an empty message aborts the commit.
# On branch master
# Your branch is up-to-date with 'origin/master'.
#
# Changes to be committed:
#	modified:   reuterminator/preprocessor.py
#	modified:   reuterminator/reuterssgmlparser.py
#
# Untracked files:
#	reuterminator/datadump.txt
#	reuterminator/reuterssgmlparser.pyc
#