Factor out a general purpose predicate script from the `csmith` driver#1068

Merged

bors-servo merged 3 commits intorust-lang:masterfrom

fitzgen:predicate-script

Oct 10, 2017

Commits on Oct 10, 2017

Add a predicate script for determining whether `bindgen` can process a given header
fitzgen
committed
Make the `csmith` driver use `predicate.py` instead of its own half reimplementation
fitzgen
committed
Recommend using `predicate.py` with `creduce` in CONTRIBUTING.md
fitzgen
committed