Update to Minecraft 1.11

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

paper-server/nms-patches/EntityArmorStand.patch

@@ -15,10 +15,10 @@
 +
  public class EntityArmorStand extends EntityLiving {
  
-     private static final Vector3f br = new Vector3f(0.0F, 0.0F, 0.0F);
-@@ -373,6 +382,21 @@
-         if (itemstack1 == null || (this.bB & 1 << enumitemslot.c() + 8) == 0) {
-             if (itemstack1 != null || (this.bB & 1 << enumitemslot.c() + 16) == 0) {
+     private static final Vector3f bq = new Vector3f(0.0F, 0.0F, 0.0F);
+@@ -364,6 +373,21 @@
+         if (itemstack1.isEmpty() || (this.bA & 1 << enumitemslot.c() + 8) == 0) {
+             if (!itemstack1.isEmpty() || (this.bA & 1 << enumitemslot.c() + 16) == 0) {
                  ItemStack itemstack2;
 +                // CraftBukkit start
 +                org.bukkit.inventory.ItemStack armorStandItem = CraftItemStack.asCraftMirror(itemstack1);
@@ -36,9 +36,9 @@
 +                }
 +                // CraftBukkit end
  
-                 if (entityhuman.abilities.canInstantlyBuild && (itemstack1 == null || itemstack1.getItem() == Item.getItemOf(Blocks.AIR)) && itemstack != null) {
+                 if (entityhuman.abilities.canInstantlyBuild && itemstack1.isEmpty() && !itemstack.isEmpty()) {
                      itemstack2 = itemstack.cloneItemStack();
-@@ -394,6 +418,11 @@
+@@ -385,6 +409,11 @@
      }
  
      public boolean damageEntity(DamageSource damagesource, float f) {