add rogue submodule and support for compiling, some cleanup

tests/settest2.pas

@@ -0,0 +1,20 @@
+program settest2;
+type weekday = (Mon,Tue,Wed,Thu,Fri,Sat,Sun);
+     days = set of weekday;
+
+var s:days;
+    d:weekday;
+
+begin
+	s := [Sat,Sun]; (* set literal  *)
+
+	d := Sun;
+	if d in [Sat,Sun] then (* array literal *)
+		writeln('weekend');
+
+	if d in s then
+		writeln('also weekend');
+
+	d := Mon;
+	s := s + [d];
+end.