Like we've done in what seems like an infinite stream of random
scripts, we need to set sys.stdout to normalize to LF on
Python 3 on Windows or else CRLF can creep in.
With this change, test-fix.t now passes on Python 3 on Windows.
actually @mharbison72 comment on D8345 make me reconsider. Please allign the status of this with the status of D8345.