- split erp5_legacy into erp5_simulation_legacy (for generic objects) and
  erp5_{trade,accounting,invoicing}_simulation_legacy
- reverse dependency of erp5_simulation (which may not even need erp5_base)
- move obsolete portal type definitions (including some from erp5_base) to
  appropriate BT
- update BT list of unit tests

A unit test testing Trade now needs:
- new simulation: erp5_base, erp5_pdm, erp5_simulation, erp5_trade,
  erp5_simulation_test (in this order)
- legacy: erp5_base, erp5_pdm, erp5_simulation, erp5_simulation_legacy,
  erp5_trade, erp5_trade_legacy (in this order)

git-svn-id: https://svn.erp5.org/repos/public/erp5/sandbox/amount_generator@38036 20353a03-c40f-0410-a6d1-a30d3c3de9de