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 depenencies 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).  This formula should go in
the science tap, but I wasn't sure if there was a way to submit a pull request
to that repo directly.  Thanks!