[PATCH] Adding diversity for security

[JF Bastien]

  C++11 now seems to be OK with LLVM (see http://llvm-reviews.chandlerc.com/D2905). Could we start the discussion about using it for this patch instead of having a separate RNG?

  Bikeshed *which* RNG to use, and how to use random_device and such to seed things, as well as being able to feed randomness for an external file (which Geremy suggested offline).

http://llvm-reviews.chandlerc.com/D1802