Updated Upstream (Spigot) (#4745)

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

Spigot Changes:
a19903d2 SPIGOT-520: Add option to disable player data saving

Spigot-Server-Patches/0592-Add-getOfflinePlayerIfCached-String.patch

@@ -0,0 +1,39 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: oxygencraft <21054297+oxygencraft@users.noreply.github.com>
+Date: Sun, 25 Oct 2020 18:34:50 +1100
+Subject: [PATCH] Add getOfflinePlayerIfCached(String)
+
+
+diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+index d8d29d14559169f5e8d8b4cf63d8b427b823eb2f..4e1b4d7cde8e0ea2d5e765dfc879db55e7bd669d 100644
+--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
++++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+@@ -1584,6 +1584,28 @@ public final class CraftServer implements Server {
+         return result;
+     }
+ 
++    // Paper start
++    @Override
++    @Nullable
++    public OfflinePlayer getOfflinePlayerIfCached(String name) {
++        Validate.notNull(name, "Name cannot be null");
++        Validate.notEmpty(name, "Name cannot be empty");
++
++        OfflinePlayer result = getPlayerExact(name);
++        if (result == null) {
++            GameProfile profile = console.getUserCache().getProfileIfCached(name);
++
++            if (profile != null) {
++                result = getOfflinePlayer(profile);
++            }
++        } else {
++            offlinePlayers.remove(result.getUniqueId());
++        }
++
++        return result;
++    }
++    // Paper end
++
+     @Override
+     public OfflinePlayer getOfflinePlayer(UUID id) {
+         Validate.notNull(id, "UUID cannot be null");