Update to Minecraft 1.11

By: md_5 <git@md-5.net>

paper-server/nms-patches/RecipesFurnace.patch

@@ -1,6 +1,6 @@
 --- a/net/minecraft/server/RecipesFurnace.java
 +++ b/net/minecraft/server/RecipesFurnace.java
-@@ -9,8 +9,10 @@
+@@ -8,8 +8,10 @@
  public class RecipesFurnace {
  
      private static final RecipesFurnace a = new RecipesFurnace();
@@ -12,7 +12,7 @@
  
      public static RecipesFurnace getInstance() {
          return RecipesFurnace.a;
-@@ -55,6 +57,12 @@
+@@ -54,6 +56,12 @@
          this.registerRecipe(Blocks.QUARTZ_ORE, new ItemStack(Items.QUARTZ), 0.2F);
      }
  
@@ -25,9 +25,9 @@
      public void registerRecipe(Block block, ItemStack itemstack, float f) {
          this.a(Item.getItemOf(block), itemstack, f);
      }
-@@ -70,13 +78,23 @@
+@@ -68,13 +76,23 @@
+     }
  
-     @Nullable
      public ItemStack getResult(ItemStack itemstack) {
 -        Iterator iterator = this.recipes.entrySet().iterator();
 +        // CraftBukkit start - initialize to customRecipes
@@ -39,19 +39,19 @@
  
          do {
              if (!iterator.hasNext()) {
--                return null;
+-                return ItemStack.a;
 +                // CraftBukkit start - fall back to vanilla recipes
 +                if (!vanilla && !this.recipes.isEmpty()) {
 +                    iterator = this.recipes.entrySet().iterator();
 +                    vanilla = true;
 +                } else {
-+                    return null;
++                    return ItemStack.a;
 +                }
 +                // CraftBukkit end
              }
  
              entry = (Entry) iterator.next();
-@@ -94,13 +112,23 @@
+@@ -92,13 +110,23 @@
      }
  
      public float b(ItemStack itemstack) {