Switching back to LU decomposition, because of further tests

Author: mike0609king

src/main/java/org/apache/sysds/runtime/matrix/data/LibCommonsMath.java

@@ -579,7 +579,7 @@ private static MatrixBlock computeDeterminant(Array2DRowRealMatrix in) {
 		final int useGaussianStrategy = 1;
 		final int useBareissStrategy = 2;
 		final int useLaplaceStrategy = 3;
-		int computationStrategy = useBareissStrategy;
+		int computationStrategy = useBuiltinStrategy;
 
 		double determinant = 0;
 		switch (computationStrategy) {