tile-names: let loadMap() handle dyn-numbered tiles

src/micropolisj/engine/Micropolis.java

@@ -2137,7 +2137,7 @@ public class Micropolis
 			{
 				int z = dis.readShort();
 				z &= ~(1024 | 2048 | 4096 | 8192 | 16384); // clear ZONEBIT,ANIMBIT,BULLBIT,BURNBIT,CONDBIT on import
-				map[y][x] = (char) z;
+				map[y][x] = (char) Tiles.loadByOrdinal(z).tileNumber;
 			}
 		}
 	}

src/micropolisj/engine/Tiles.java

@@ -86,6 +86,11 @@ public class Tiles
 		return tilesByName.get(tileName);
 	}
 
+	public static TileSpec loadByOrdinal(int tileNumber)
+	{
+		return load(Integer.toString(tileNumber));
+	}
+
 	/**
 	 * Access a tile specification by index number.
 	 *