updated for version 7.3.1003

Problem:    Python interface does not compile with Python 2.2
Solution:   Fix thread issues and True/False. (ZyX)

src/if_python3.c

@@ -693,6 +693,8 @@ static PyObject *FunctionGetattro(PyObject *, PyObject *);
 
 static struct PyModuleDef vimmodule;
 
+#define PY_CAN_RECURSE
+
 /*
  * Include the code shared with if_python.c
  */