Optimize checkIfActive to only check if chunks are loaded if entity is active

This will cut down on the call to areChunksLoaded drastically, which is pretty slow

By: Aikar <aikar@aikar.co>

CraftBukkit-Patches/0028-Watchdog-Thread.patch

@@ -1,4 +1,4 @@
-From b0378ebbdbfe2bb1462cf2c3c44562b9ac731408 Mon Sep 17 00:00:00 2001
+From 51ae704ad3290541373ec51570d48c9e66743f5c Mon Sep 17 00:00:00 2001
 From: md_5 <md_5@live.com.au>
 Date: Sat, 23 Feb 2013 12:33:20 +1100
 Subject: [PATCH] Watchdog Thread.
@@ -34,7 +34,7 @@ index aa6a14a..6005fac 100644
                  this.isStopped = true;
              } catch (Throwable throwable1) {
 diff --git a/src/main/java/org/bukkit/craftbukkit/Spigot.java b/src/main/java/org/bukkit/craftbukkit/Spigot.java
-index 3171411..c0335fa 100644
+index 83018b0..931f6fd 100644
 --- a/src/main/java/org/bukkit/craftbukkit/Spigot.java
 +++ b/src/main/java/org/bukkit/craftbukkit/Spigot.java
 @@ -1,5 +1,6 @@
@@ -90,7 +90,7 @@ index 3171411..c0335fa 100644
          }
  
          if (server.chunkGCPeriod == 0) {
-@@ -265,4 +280,63 @@ public class Spigot {
+@@ -264,4 +279,63 @@ public class Spigot {
          SpigotTimings.checkIfActiveTimer.stopTiming();
          return isActive;
      }
@@ -297,5 +297,5 @@ index e568bf6..7c18391 100644
      default:
          growth-chunks-per-tick: 650
 -- 
-1.8.1-rc2
+1.8.1.1