added a wrapper method for MathUtils.rdot() for some easier matrix handling
first compilable port of Adam's VNZSCG for optimization
remodeled LogisticRegressionOptimizer after Adam's updates in the backprop pipeline for DBNs
DBN's LogisticRegression now rebuilt for new gen backprop pipeline. needs more testing.
fixed matrix init bug in VNZSCG.optimize() method
fixed clone issue w null ref in adagrad for DBNs
fixed some null matrix cloning issues in BMLNNV.clone()
fixed some very basic issues in BMLNNV
removed some testing/dev scaffolding code from DBN IR Worker