made it so units that can no longer advance have experience needed displayed as '-'

src/display.cpp

@@ -686,8 +686,14 @@ void display::draw_unit_details(int x, int y, const gamemap::location& loc,
 			<< (lang_ability.empty() ? u.type().ability() : lang_ability)<<"\n"
 			<< string_table["hp"] << ": " << u.hitpoints()
 			<< "/" << u.max_hitpoints() << "\n"
-			<< string_table["xp"] << ": " << u.experience() << "/"
-			<< u.max_experience() << "\n"
+			<< string_table["xp"] << ": ";
+	
+	if(u.type().advances_to().empty())
+		details << u.experience() << "/-";
+	else
+		details << u.experience() << "/" << u.max_experience();
+	
+	details << "\n"
 			<< string_table["moves"] << ": " << u.movement_left() << "/"
 			<< u.total_movement()
 			<< "\n";

src/game_config.cpp

@@ -22,7 +22,7 @@ namespace game_config
 	const int cure_amount = 8;
 	const int curer_heals_per_turn = 18;
 	const int recall_cost = 20;
-	const std::string version = "0.5.1";
+	const std::string version = "0.5.2-CVS";
 	bool debug = false;
 
 #ifdef WESNOTH_PATH

src/widgets/menu.cpp

@@ -185,7 +185,25 @@ void menu::handle_event(const SDL_Event& event)
 		if(item != selected_) {
 			selected_ = item;
 			drawn_ = false;
-		}
+		}	
+	} else if(event.type == SDL_MOUSEBUTTONDOWN 
+			&& event.button.button == SDL_BUTTON_WHEELDOWN) {
+			if(first_item_on_screen_+max_menu_items<items_.size()) {
+				++first_item_on_screen_;
+				if (selected_<first_item_on_screen_)
+					selected_=first_item_on_screen_;
+				itemRects_.clear();
+				drawn_ = false;
+			}
+	} else if(event.type ==	SDL_MOUSEBUTTONDOWN
+			&& event.button.button == SDL_BUTTON_WHEELUP) {
+			if(first_item_on_screen_>0) {
+				--first_item_on_screen_;
+				if (selected_>=first_item_on_screen_+int(max_menu_items))
+					selected_=first_item_on_screen_+max_menu_items-1;
+				itemRects_.clear();
+				drawn_ = false;
+			}
 	}
 }
 
@@ -199,10 +217,9 @@ int menu::process(int x, int y, bool button,bool up_arrow,bool down_arrow,
 			itemRects_.clear();
 			drawn_ = false;
 		}
-
 		const bool down = downarrow_.process(x,y,button);
 		if(down && first_item_on_screen_ + max_menu_items < items_.size()) {
-				++first_item_on_screen_;
+			++first_item_on_screen_;
 			itemRects_.clear();
 			drawn_ = false;
 		}