更新了CommodityPO包 by lhw
更改了CommodityListPO by lhw
向库存单据持久化对象中添加了属性和方法  by lhw

分别是AlertBillPO和SpillsLossBillPO
Merge branch 'master' of ssh://git@github.com/minusone13/InvoicingSystem.git