monkeyPatch
- added the interface ITransformation to Transformation and
  TransformedResource
- changed TransformedResource to return a tempDocument of 
  TransformedResouce instead of Amount
- changed TransformationRule to use
  Transformation.getAggeratedAmountList again, because Transformation
  came to be able to return document which has trade_phase


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@27361 20353a03-c40f-0410-a6d1-a30d3c3de9de