Deadlock in initDynamicMetaObject with subinterpreters

When generating a binding for a QObject class shiboken generates a call of PySide::initDynamicMetaObject(...).

This usually does not lead to problems but if the QObject inheriting class is declared inside a namespace the deadlock occurs.

Anywhere in the code of PySide::initDynamicMetaObject(...) the GIL is acquired (although I already acquired it before) via the PyGilState_*-API that is not compatible to subinterpreters.

This results in a deadlock.