Fix spawn reason for mob eggs

nms-patches/ItemMonsterEgg.patch

@@ -1,5 +1,5 @@
---- ../work/decompile-8eb82bde//net/minecraft/server/ItemMonsterEgg.java	2014-11-28 17:43:43.241707432 +0000
-+++ src/main/java/net/minecraft/server/ItemMonsterEgg.java	2014-11-28 17:38:19.000000000 +0000
+--- ../work/decompile-8eb82bde//net/minecraft/server/ItemMonsterEgg.java	2014-12-03 10:52:09.804159084 +0000
++++ src/main/java/net/minecraft/server/ItemMonsterEgg.java	2014-12-03 10:51:53.380159449 +0000
 @@ -19,7 +19,8 @@
      }
  
@@ -23,3 +23,12 @@
          if (!EntityTypes.eggInfo.containsKey(Integer.valueOf(i))) {
              return null;
          } else {
+@@ -123,7 +130,7 @@
+                     entityinsentient.aI = entityinsentient.yaw;
+                     entityinsentient.aG = entityinsentient.yaw;
+                     entityinsentient.prepare(world.E(new BlockPosition(entityinsentient)), (GroupDataEntity) null);
+-                    world.addEntity(entity);
++                    world.addEntity(entity, spawnReason); // CraftBukkit
+                     entityinsentient.x();
+                 }
+             }