Update to Minecraft 1.12-pre6

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

paper-server/nms-patches/IRecipe.patch

@@ -1,37 +1,11 @@
 --- a/net/minecraft/server/IRecipe.java
 +++ b/net/minecraft/server/IRecipe.java
-@@ -3,6 +3,7 @@
- public abstract class IRecipe implements Comparable<IRecipe> {
- 
-     protected String a;
-+    public MinecraftKey key; // CraftBukkit
- 
-     public IRecipe() {
-         this("");
-@@ -25,10 +26,24 @@
-     }
- 
-     public int a(IRecipe irecipe) {
--        return ((MinecraftKey) CraftingManager.recipes.b(this)).toString().compareTo(((MinecraftKey) CraftingManager.recipes.b(irecipe)).toString());
-+        return this.key.toString().compareTo(irecipe.key.toString()); // CraftBukkit
-     }
- 
--    public int compareTo(Object object) {
-+    public int compareTo(IRecipe object) { // CraftBukkit - decompile error
-         return this.a((IRecipe) object);
+@@ -13,4 +13,8 @@
+     default boolean c() {
+         return false;
      }
 +
-+    // CraftBukkit start
-+    @Override
-+    public boolean equals(Object obj) {
-+        return obj instanceof IRecipe && key.equals(((IRecipe) obj).key);
-+    }
-+
-+    @Override
-+    public int hashCode() {
-+        return key.hashCode();
-+    }
-+
-+    public abstract org.bukkit.inventory.Recipe toBukkitRecipe();
-+    // CraftBukkit end
++    org.bukkit.inventory.Recipe toBukkitRecipe(); // CraftBukkit
++    
++    void setKey(MinecraftKey key); // CraftBukkit
  }