openbr: 0.3 open source biometric recognition

This is the initial homebrew formula for the OpenBR project. OpenBR
provides a framework for developing, improving, comparing, and deploying
automated biometric systems. The only dependencies are Qt and OpenCV.
Brew audit complained about the env=std flag for OpenCV, but it was the only
way I could get it to compile successfully (and I couldn't find any examples
of formulae relying on OpenCV in the science tap).