Fix item deletion in creative menu for items that are the same id/meta but differnet NBT's. Closes #479

patches/minecraft/net/minecraft/client/gui/inventory/GuiContainerCreative.java.patch

@@ -9,6 +9,15 @@
  
      public GuiContainerCreative(EntityPlayer par1EntityPlayer)
      {
+@@ -196,7 +198,7 @@
+                         return;
+                     }
+ 
+-                    if (itemstack != null && itemstack2 != null && itemstack.isItemEqual(itemstack2))
++                    if (itemstack != null && itemstack2 != null && itemstack.isItemEqual(itemstack2) && ItemStack.areItemStackTagsEqual(itemstack, itemstack2)) //Forge: Bugfix, Compare NBT data, allow for deletion of enchanted books, MC-12770
+                     {
+                         if (par3 == 0)
+                         {
 @@ -274,6 +276,13 @@
              this.setCurrentCreativeTab(CreativeTabs.creativeTabArray[i]);
              this.field_82324_x = new CreativeCrafting(this.mc);