non unicode data not correctly handled in Python 3

[fbenkstein]

Filenames and command line arguments can include (non-unicode) binary data on most operating systems. This is more difficult to handle on Python 3 because these are generally expressed as the str type. I've created pull request #733 with a test case that highlights the issue but do not have a solution at this point.

[giampaolo]

Fixed in #733

[giampaolo]

...also on OSX (818ef90 and ba83883).

[giampaolo]

It turns out this problem exists on pretty much all platforms and it affects name(), exe(), cmdline(), cwd() and open_files() methods on Python 3 only.