Changes to test system to allow per class tests.

sbf-cpp/Derangements_test.cpp

@@ -0,0 +1,10 @@
+#include "Derangements.h"
+#include "test.h"
+using namespace SBF;
+using namespace Test;
+
+test_method_result main_test_Derangements(int argc, char** argv) {
+    test_method_result results = std::make_tuple(1, 0);
+    
+    return results;
+}