修正测试用例等
[change]base.Class 暂时去掉ondispose事件，fire的时候加了个被析构的判断
Merge pull request #526 from huangfangrong/dev

[change]base.Class 暂时去掉ondispose事件，fire的时候加了个被析构的判断
Merge pull request #525 from wangxiao/plugin

修正测试用例等
Merge pull request #528 from linlingyu/dev

[Change] 体积优化
[Change] lang.Class直接引用baidu.base.Class