core system

force strict ISO C++ (-Wpedantic)
TODO: still a lot of variadic macros are not valid ISO C++

src/CXX/Python3/IndirectPythonInterface.hxx

@@ -179,6 +179,6 @@ PYCXX_EXPORT void _XINCREF( PyObject *op );
 PYCXX_EXPORT void _XDECREF( PyObject *op );
 
 PYCXX_EXPORT const char *__Py_PackageContext();
-};
+}
 
 #endif    // __CXX_INDIRECT_PYTHON_INTERFACE__HXX__