Issue1311

envoirement:
-define a python class that extends a simple Java class.
-serialize an instance of the defined class
-reload the module or the class, trigerring a new proxy creation
-deserialize
result:
when you try to deserialize u will get an exception telling you that the
serialVersionUID is incompatible, this is the result of creating the new
proxy class that has a new name. In the class MakeProxies there is a
static proxy counter, removing that and keeping the same name for the
reloaded class resolved the problem.