_args_from_interpreter_flags really deserves its own unittest using a stubbed out sys.flags.  if someone wants to go ahead with the test provided in the existing patch here or write one of those, feel free.

As is, i've committed a patch logically equivalent (but less hacky) to the one from #19284.  Ironically _that_ patch wasn't the right thing to do in python _3_ but that's a separate issue i'll address outside of this bug.  It is effective for Python 2 where hash randomization must be explicitly enabled.