Dictionaries need String values for keys
The cleanup patch earlier mistakenly used raw names as keys
to the dictionary (such as one would do in a function call).
This fixes that mistake.
Patch by: Sverre Rabbelier
Reviewed by: to-be-reviewed
class_prepared = object()
pre_init= object()
post_init = object()
pre_save = object()
post_save = object()
pre_delete = object()
post_delete = object()
post_syncdb = object()