Investigate crashes if _Py_LOCAL_REGION != 0

[xFrednet]

Redefining the local region to be anything besides 0 causes Python to crash on startup. This is likely due to some objects which are initialized in a weird way that doesn't set the region.

As a backup we probably want to keep the local region defined as 0 for these cases. But it would be good to still investigate these crashes and determine if there are some other ways objects are initialized that needs to set the region.

This can be vital for allocation methods that don't zero the memory.