[Auto] Update Upstream

Upstream has released updates that appear to apply compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing.

Bukkit Changes:
d2834556 SPIGOT-4219: Event for PigZombies angering.

CraftBukkit Changes:
a9c796f1 SPIGOT-4184: Fix furnaces not matching Vanilla smelt or animations
195f071e SPIGOT-4219: Event for PigZombies angering.
5e3082c7 SPIGOT-4230: Improve legacy block types

Spigot-Server-Patches/Option-to-disable-BlockPhysicsEvent-for-Redstone.patch

@@ -11,7 +11,7 @@ Defaulting this to false will provide substantial performance improvement
 by saving millions of event calls on redstone heavy servers.
 
 diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
-index c2c33d75b..b3b3baddc 100644
+index c2c33d75bf..b3b3baddc0 100644
 --- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
 +++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
 @@ -0,0 +0,0 @@ public class PaperWorldConfig {
@@ -25,7 +25,7 @@ index c2c33d75b..b3b3baddc 100644
 +    }
  }
 diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
-index 1df752894..87fd23c7f 100644
+index 1df7528949..87fd23c7f8 100644
 --- a/src/main/java/net/minecraft/server/World.java
 +++ b/src/main/java/net/minecraft/server/World.java
 @@ -0,0 +0,0 @@ public abstract class World implements GeneratorAccess, IIBlockAccess, AutoClose
@@ -38,7 +38,7 @@ index 1df752894..87fd23c7f 100644
                      this.getServer().getPluginManager().callEvent(event);
  
 diff --git a/src/main/java/net/minecraft/server/WorldServer.java b/src/main/java/net/minecraft/server/WorldServer.java
-index ecee3b406..96002184b 100644
+index ecee3b4064..96002184bb 100644
 --- a/src/main/java/net/minecraft/server/WorldServer.java
 +++ b/src/main/java/net/minecraft/server/WorldServer.java
 @@ -0,0 +0,0 @@ import org.bukkit.event.weather.LightningStrikeEvent;