(svn r3992) -Fix: Rewrote the code to determine whether a rail-tile can be terraformed.
Fixes a bug where you could terraform a tunnel (fixed by r3228, but reverted that one)
Fixes a bug introduced by r3228 which allowed steep rail tiles resulting in ... unwanted effects such as display artifacts.
That means the terraform feature should not work as intended; it also uses _valid_tileh_slopes to determine valid configurations instead of hand-brewn stuff.
TODO: _terraform_err_tile and similar TileIndices should have INVALID_TILE as "unused", not 0. (0 is a valid tile).

/* $Id$ */

#ifndef NETWORK_GAMELIST_H
#define NETWORK_GAMELIST_H

void NetworkGameListClear(void);
NetworkGameList *NetworkGameListAddItem(uint32 ip, uint16 port);
void NetworkGameListRemoveItem(NetworkGameList *remove);
void NetworkGameListAddQueriedItem(const NetworkGameInfo *info, bool server_online);

#endif /* NETWORK_GAMELIST_H */