[tests] Port unittest_cwctl to py3k
On python 2, sys.stdout takes bytes-like objects whereas python 3's
takes unicode-like objects and handles the encoding on its own.
from os.path import join
assert __file__.endswith(join('scripts', 'script3.py')), __file__
assert '__main__' == __name__, __name__
assert ['-vd', '-f', 'FILE.TXT'] == __args__, __args__