* Automatically disable instrumentation when the -n option is provided.
Setting the PYTHON_AFL_DUMB environment variable is no longer needed.
Thanks to Michal Zalewski for the hint how to implement this feature.
* Update the module description to stress that it's dedicated for
pure-Python code.
-- Jakub Wilk <jwilkjwilk.net> Mon, 27 Apr 2015 19:31:08 +0200