otherwise model is only ever trained with default
parameters, and digits_adjust does nothing (for example)

Also, removed the one from modules/python/src2/cv.py and cleared its
executable bit, since it's not a script.

small fix in find_obj.py

line breaks in fitline.py description

digits.py now saves the resulting SVM classifier for use in digits_video.py

added deskew for SVN and KNearest recognition sample