title: Python Error The _posixsubprocess module is not being used
body: <p>Hi im running a subprocess with threads trough a python wrapper and I get the following warning when I use the subprocess module.</p>
  
  <p>"The _posixsubprocess module is not being used,  Child process reliability may suffer if your program uses threads."</p>
  
  <p>What dose this mean?
  How can I get rid of it?</p>