Issue 1925: TypeError in deepcopy

Traceback (most recent call last):
  File "/home/egon/Entwicklung/notes/gui/uicommand.py", line 645, in
doCommand
    self.controller.copyItemID()
  File "/home/egon/Entwicklung/notes/gui/navicontroller.py", line 306,
in copyItemID
    id_copy = self.Sammlung.kopiereEintrag(id)
  File "/home/egon/Entwicklung/notes/domain/note.py", line 185, in
kopiereEintrag
    EintragKopie = copy.deepcopy(Eintrag)
  File "/usr/lib/python2.5/copy.py", line 189, in deepcopy
    y = _reconstruct(x, rv, 1, memo)
  File "/usr/lib/python2.5/copy.py", line 337, in _reconstruct
    state = deepcopy(state, memo)
  File "/usr/lib/python2.5/copy.py", line 162, in deepcopy
    y = copier(x, memo)
  File "/usr/lib/python2.5/copy.py", line 254, in _deepcopy_dict
    y[deepcopy(key, memo)] = deepcopy(value, memo)
  File "/usr/lib/python2.5/copy.py", line 189, in deepcopy
    y = _reconstruct(x, rv, 1, memo)
  File "/usr/lib/python2.5/copy.py", line 337, in _reconstruct
    state = deepcopy(state, memo)
  File "/usr/lib/python2.5/copy.py", line 162, in deepcopy
    y = copier(x, memo)
  File "/usr/lib/python2.5/copy.py", line 254, in _deepcopy_dict
    y[deepcopy(key, memo)] = deepcopy(value, memo)
  File "/usr/lib/python2.5/copy.py", line 189, in deepcopy
    y = _reconstruct(x, rv, 1, memo)
  File "/usr/lib/python2.5/copy.py", line 322, in _reconstruct
    y = callable(*args)
  File "/usr/lib/python2.5/copy_reg.py", line 92, in __newobj__
    return cls.__new__(cls, *args)
TypeError: object.__new__(PySwigObject) is not safe, use
PySwigObject.__new__()