win32: strange behaviour with bundle loading

[Michael Scheibler]

I found a strange behaviour in the objc runtime when new classes are 
being loaded using NSBundle (Windows DLL):
First objc_send_load tries to find all superclasses of this class by 
taking class->superclass. The first superclass is a class object, but 
this class' superclass is only a char pointer. I thought it wouldn't do 
much harm but later my application tries to enumerate again all the 
class' superclasses and they still aren't resolved which results in a 
SIGSEGV fault.

Michael