ObjectInputStream getting wrong classloader

[Thrameos]

It appears that ObjectInputStream is caller sensitive but is not marked as such. If you manually create an ObjectInputStream and then use it to read objects from a jar loaded in the class path it will fail with class not found even through the class is clearly available. If the same calls are made from a class called from JPype which just adds an intermediate layer, the same calls work.

This will require a special catch for this one constructor. Not sure how much effort to put on this one.