Created FinalScorer and PlayoutScorer subinterfaces of Scorer.
Added the RaveDescender and some tests
Merge branch 'RaveTreeUpdater' of ssh://github.com/Orego/Orego into RaveTreeUpdater
OREGO_ROOT now lives in its own class ProperyPaths.
Merge branch 'orego8' of ssh://github.com/Orego/Orego into orego8
Merge branch 'orego8' into RaveTreeUpdater