[PATCH] Random Number Generator Refactoring (removing from Module)

[Stephen Crane]

Here's a new revision which should resolve all outstanding comments. What does everyone think? I think we should go ahead and commit this, since it resolves the biggest issue and gets rid of the inverted dependency of Module on Support/RandomNumberGenerator.h. If further improvements to use randomness buffers or similar ideas are desired, this can be easily added to the new version by changing how instance generation works.

http://reviews.llvm.org/D4377