add slabs

src/main/java/appeng/block/AEBaseItemBlockSlab.java

@@ -0,0 +1,12 @@
+package appeng.block;
+
+import net.minecraft.block.Block;
+import net.minecraft.item.ItemSlab;
+
+public class AEBaseItemBlockSlab extends ItemSlab {
+
+	public AEBaseItemBlockSlab(Block block, AEBaseSlabBlock singleSlab, AEBaseSlabBlock doubleSlab, Boolean isDoubleSlab)
+	{
+		super( block, singleSlab, doubleSlab, isDoubleSlab );
+	}
+}