#124: Redesigned LBP class by providing a generic implementation of LBP; removed old LBP4R, LBP8R, LBP16R; added C++ tests; updated python tests.
added 'reason' parameter for bob::core::Exception; cleaned up bob::ip::Exception.
Modified the LBPTop operator and the LBPHSFeatures to work with the new LBP class.
Updated LBP tutorial.
Took back changes in bob::core::Exception since tests in release mode didn't pass; Added second constructor to bob::ip::LBPRadiusDoesNotMatch exception and used this instead..