old_contents: #!/usr/bin/env python
  import idiotest.run
  
  idiotest.run.run('selftest')
  
new_contents: #!/usr/bin/env python
  import idiotest.run, sys, os
  idiotest.run.run(os.path.join(sys.path[0], 'selftest'))
  
subject: Allow self test to be run from anywhere