Renamed Classes

Renamed MobObelisk to MobMonolith. Renamed LimboSkyProvider and
PocketProvider to have Xs at the ends of their names. This is temporary
so that I can change the name's capitalization. Windows considers the
names the same because it's file naming is case insensitive.

StevenDimDoors/mod_pocketDim/world/LimboProvider.java

@@ -30,7 +30,7 @@ public class LimboProvider extends WorldProvider
 	public LimboProvider()
 	{
 		this.hasNoSky = false;
-		this.skyRenderer = new limboSkyProvider();
+		this.skyRenderer = new LimboSkyProviderX();
 		this.spawner = mod_pocketDim.spawner;
 		this.properties = mod_pocketDim.properties;
 	}