Add implementation of the elder Guardian API

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

paper-server/nms-patches/EntityZombie.patch

@@ -1,5 +1,5 @@
---- ../work/decompile-8eb82bde//net/minecraft/server/EntityZombie.java	2014-11-28 17:43:43.185707433 +0000
-+++ src/main/java/net/minecraft/server/EntityZombie.java	2014-11-28 17:38:22.000000000 +0000
+--- ../work/decompile-8eb82bde//net/minecraft/server/EntityZombie.java	Thu Dec 11 13:57:17 2014
++++ src/main/java/net/minecraft/server/EntityZombie.java	Thu Dec 11 13:56:17 2014
 @@ -4,6 +4,14 @@
  import java.util.List;
  import java.util.UUID;
@@ -106,3 +106,13 @@
          entityvillager.addEffect(new MobEffect(MobEffectList.CONFUSION.id, 200, 0));
          this.world.a((EntityHuman) null, 1017, new BlockPosition((int) this.locX, (int) this.locY, (int) this.locZ), 0);
      }
+@@ -487,7 +516,8 @@
+         this.a(flag ? 0.5F : 1.0F);
+     }
+ 
+-    protected final void a(float f, float f1) {
++    // PAIL: Access + rename please
++    public final void a(float f, float f1) { // CraftBukkit - protected to public
+         boolean flag = this.bo > 0.0F && this.bp > 0.0F;
+ 
+         this.bo = f;