Fix method name conflict between TileEntity and ILaserTarget

I'm told this original decision was intentional, but Loom prefers not to reobfuscate the method as it's defined in a custom interface. 1.4 MCP instead reobfuscated it, which was relied upon here. In 1.7 this would have been an error during reobfuscation.

common/buildcraft/silicon/ILaserTarget.java

@@ -5,7 +5,7 @@ public interface ILaserTarget {
 
 	void receiveLaserEnergy(float energy);
 
-	boolean isInvalid();
+	boolean isLaserInvalid();
 
 	int getXCoord();
 

common/buildcraft/silicon/TileAssemblyAdvancedWorkbench.java

@@ -11,7 +11,6 @@
 import net.minecraft.inventory.InventoryCrafting;
 import net.minecraft.inventory.SlotCrafting;
 import net.minecraft.item.ItemStack;
-import net.minecraft.item.crafting.CraftingManager;
 import net.minecraft.item.crafting.IRecipe;
 import net.minecraft.nbt.NBTTagCompound;
 import net.minecraft.nbt.NBTTagList;
@@ -465,5 +464,10 @@ public void sendGUINetworkData(Container container, ICrafting iCrafting) {
 		iCrafting.sendProgressBarUpdate(container, 4, lRecentEnergy & 0xFFFF);
 		iCrafting.sendProgressBarUpdate(container, 5, (lRecentEnergy >>> 16) & 0xFFFF);
 	}
+
+	@Override
+	public boolean isLaserInvalid() {
+		return isInvalid();
+	}
 
 }

common/buildcraft/silicon/TileAssemblyTable.java

@@ -74,6 +74,7 @@ public LinkedList<AssemblyRecipe> getPotentialOutputs() {
 		return result;
 	}
 
+	@Override
 	public void receiveLaserEnergy(float energy) {
 		energyStored += energy;
 		recentEnergy[tick] += energy;
@@ -492,4 +493,10 @@ public int getYCoord() {
 	public int getZCoord() {
 		return zCoord;
 	}
+
+	@Override
+	public boolean isLaserInvalid() {
+		return isInvalid();
+	}
+
 }

common/buildcraft/silicon/TileLaser.java

@@ -102,7 +102,7 @@ protected boolean canUpdateLaser() {
 
 	protected boolean isValidTable() {
 
-		if (laserTarget == null || laserTarget.isInvalid() || !laserTarget.hasCurrentWork())
+		if (laserTarget == null || ((TileEntity)laserTarget).isInvalid() || !laserTarget.hasCurrentWork())
 			return false;
 
 		return true;