codereview: fix windows
codereview: fix windows

Uploading go files on Windows aborts with gofmt: exceptions.ValueError:
close_fds is not supported on Windows platforms if you redirect stdin/stdout/stderr

R=rsc, mattn, Joe Poirier
CC=golang-dev
http://codereview.appspot.com/4025046

Committer: Russ Cox <5ad239cb8a44f659eaaee0aa1ea5b94947abe557@golang.org>
abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go