Updated Upstream (Bukkit/CraftBukkit)

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

Bukkit Changes:
39ce5d3a SPIGOT-4399: ItemMeta.equals broken with AttributeModifiers

CraftBukkit Changes:
1cf8b5dc SPIGOT-4400: Populators running on existing chunks
116cb9a1 SPIGOT-4399: Add attribute modifier equality test
5ee1c18a SPIGOT-4398: Set ASM7_EXPERIMENTAL flag

Spigot-Server-Patches/Chunk-save-queue-improvements.patch

@@ -26,12 +26,12 @@ Then finally, Sleeping will by default be removed, but due to known issues with
 But if sleeps are to remain enabled, we at least lower the sleep interval so it doesn't have as much negative impact.
 
 diff --git a/src/main/java/com/destroystokyo/paper/PaperConfig.java b/src/main/java/com/destroystokyo/paper/PaperConfig.java
-index 12a56f6147..18296f1e1b 100644
+index d0eb7c0fc2..ad3433059d 100644
 --- a/src/main/java/com/destroystokyo/paper/PaperConfig.java
 +++ b/src/main/java/com/destroystokyo/paper/PaperConfig.java
 @@ -0,0 +0,0 @@ public class PaperConfig {
-     private static void chunkLoadThreads() {
-         minChunkLoadThreads = Math.min(6, getInt("settings.min-chunk-load-threads", 2)); // Keep people from doing stupid things with max of 6
+                 " - Interval: " + timeSummary(Timings.getHistoryInterval() / 20) +
+                 " - Length: " + timeSummary(Timings.getHistoryLength() / 20));
      }
 +
 +    public static boolean enableFileIOThreadSleep;