Fix compilation in older versions of D

https://issues.dlang.org/show_bug.cgi?id=14439

src/messages.d

@@ -680,10 +680,10 @@ class SRoomList : Message
 		super(RoomList);
 
 		writei(rooms.length);	// number of room names we will send
-		foreach (room ; rooms.keys) writes(room);
+		foreach (room, users ; rooms) writes(room);
 
 		writei(rooms.length);	// number of user counts
-		foreach (users ; rooms.values) writei(users);
+		foreach (room, users ; rooms) writei(users);
 
 		writei(0);	// number of owned private rooms(unimplemented)
 		writei(0);	// number of owned private rooms(unimplemented)

src/room.d

@@ -48,6 +48,7 @@ class Room
 		return room_list[roomname];
 	}
 
+	@trusted  // .values doesn't work with @safe in old D versions
 	static Room[] rooms()
 	{
 		return room_list.values;
@@ -72,6 +73,7 @@ class Room
 			global_room_user_list.remove(username);
 	}
 
+	@trusted  // .keys doesn't work with @safe in old D versions
 	static string[] global_room_users()
 	{
 		return global_room_user_list.keys;
@@ -144,11 +146,13 @@ class Room
 		return user_list.length;
 	}
 
+	@trusted  // .values doesn't work with @safe in old D versions
 	User[] users()
 	{
 		return user_list.values;
 	}
 
+	@trusted  // .keys doesn't work with @safe in old D versions
 	private string[] user_names()
 	{
 		return user_list.keys;

src/server.d

@@ -264,6 +264,7 @@ class Server
 		return null;
 	}
 
+	@trusted  // .keys doesn't work with @safe in old D versions
 	User[] users()
 	{
 		return user_list.values;
@@ -508,7 +509,7 @@ class Server
 	private string show_users()
 	{
 		string s;
-		foreach (username ; user_list.keys) s ~= show_user(username) ~ "\n";
+		foreach (username, user ; user_list) s ~= show_user(username) ~ "\n";
 		return s;
 	}
 

src/soulsetup.d

@@ -272,13 +272,21 @@ class Menu
 		entries[index] = entry;
 		actions[index] = action;
 	}
-
+
+	@trusted  // .keys doesn't work with @safe in old D versions
+	string[] sorted_entry_indexes()
+	{
+		auto indexes = entries.keys;
+		sort(indexes);
+		return indexes;
+	}
+
 	void show()
 	{
 		writeln(format( "\n%s\n", title));
 		if (info.length > 0) writeln(format("%s\n", info));
 
-		foreach (index ; sort(entries.keys))
+		foreach (index ; sorted_entry_indexes)
 			writeln(format("%s. %s", index, entries[index]));
 
 		write("\nYour choice : ");