GraphCopy: add cases for builtin maybe descriptors to make_symbol_name

Libraries/graph_copy/graph_copy_with_names.icl

@@ -339,6 +339,24 @@ make_symbol_name "_system" descriptor_name prefix
 			-> "__Consfts";
 		"[#{}]"
 			-> "__Consa";
+		"?None"
+			-> "__Nothing";
+		"?Just"
+			-> "__Justs";
+		"?^Just"
+			-> "__Just";
+		"?#JustInt"
+			-> "__Justi";
+		"?#JustReal"
+			-> "__Justr";
+		"?#JustChar"
+			-> "__Justc";
+		"?#JustBool"
+			-> "__Justb";
+		"?#JustFile"
+			-> "__Justf";
+		"?#Just{}"
+			-> "__Justa";
 		"AP"
 			-> "e__system__"+++prefix_char prefix+++descriptor_name;
 		"_ind"