- Adjusted some tests while debugging PrettyPrinters

- Adjusted RDTreePrinter to print more "tree-like"
 - Added SetPrinter and MapPrinter
 - Fixed Issues with CStringPrinter and StringPrinter

test/tests/containers/test_rdtree.h

@@ -33,7 +33,7 @@ inline void fennec_test_containers_rdtree() {
 
 	rdtree<size_t> test;
 
-	const size_t n = 10000;
+	const size_t n = 50;
 	for (size_t i = 0; i < n; ++i) {
 		const size_t parent = rand() % (i + 1);
 		const size_t child  = rdtree<size_t>::npos;