Enhance some examples

SquiLu-ext/pp.nut

@@ -1,4 +1,7 @@
 #!/home/mingo/bin/squilu
+
+__max_print_stack_str_size <- 1000;
+
 function puts(s) {
 	fd.write(s);
 }

SquiLu/samples/generate-cpp-class-wrapper.nut

@@ -32,6 +32,10 @@ function generateCppClassWrapper(klass, klass_name="klass")
 		{
 			return to_declare ? "f" : "FLOAT";
 		}
+		if(var_name.startswith("bool_"))
+		{
+			return to_declare ? "b" : "BOOL";
+		}
 		if(var_name.startswith("str_"))
 		{
 			return to_declare ? "s" : "STRING";