Forcing physics update via blockstate.

Something to test on CivTest -- first attempt at resolving #157

Author: ProgrammerDan

src/vg/civcraft/mc/citadel/command/commands/Acid.java

@@ -8,6 +8,7 @@
 import org.bukkit.Material;
 import org.bukkit.block.Block;
 import org.bukkit.block.BlockFace;
+import org.bukkit.block.BlockState;
 import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Player;
 import org.bukkit.util.BlockIterator;
@@ -122,6 +123,8 @@ public boolean execute(CommandSender sender, String[] args) {
 			Utility.reinforcementBroken(p, pRein);
 			rm.deleteReinforcement(pTopRein);
 
+			BlockState bs = block.getState();
+			bs.update(false, true);
 		}
 		return true;
 	}