google appengine 不知道又要搞什么东东，提示要迁移，

下面是提示 This application is using the Master/Slave datastore which is deprecated! All customers should migrate to the High-Replication datastore which offers greater stability and is resilient to data center failure. To learn more about migration see

写这些，仅仅是测试与纪念这次迁移，希望能兼容，改代码真心烦人！