Fixed test_binary_opening_an_image() for Windows and Py2 Linux
Fixed test_binary_opening_an_image() for Windows and Py2 Linux

 - Changes made in _verify_events_file_uses_tabs_separators().
 - Still failing on Py3 Linux.

bthirion/nistats,nistats/nistats,bthirion/nistats,nistats/nistats,nistats/nistats