Convert file names to UTF-16 on Windows.

This fixes issue #13.

Signed-off-by: Derek Buitenhuis <derekb@vimeo.com>
Fix compiler warnings from VS 2013.

Signed-off-by: Derek Buitenhuis <derekb@vimeo.com>
Cosmetics

Signed-off-by: Derek Buitenhuis <derekb@vimeo.com>