Android.mk集成第三方jar与so的方法

参考：https://blog.csdn.net/wonderful_eastar/article/details/48441761?utm_medium=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-3.nonecase&depth_1-utm_source=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-3.nonecase