expected entrypoint. The unlinking will crash the application if the
module contained ObjC code. The price of this is small: a little wasted
memory, and only in a case than isn't expected to occur often.

scope and looking at types.

there because of the NeXT history.

By default every module is imported in its own namespace, but this can
be changed by defining USE_DYLD_GLOBAL_NAMESPACE. In a future version this
define will be replaced by a runtime setting, but that needs a bit more
thought.

This code is largely based on code and feedback from Steven Majewski,
Marcel Prastawa, Manoj Plakal and other on pythonmac-sig.

still fail on importing modules that link with libraries that fail
their initialization code (such as windowing libraries when we don't have
access to the window server) and that is what I really wanted to fix.

same module twice, which apparently crashes Python. I could not test the
error condition, but in normal life it seems to have no adverse effects.

Also removed an unsued variable, and corrected 2 glaring errors (missing
'case' in front of a label).

This should match the situation in the 1.6b1 tree.