event: fix PythonEvent

order of %includes since they matter for this case

src/python/swig/event.i

@@ -77,9 +77,11 @@
 %import "sim/serialize.hh"
 
 %include "base/types.hh"
-%include "python/swig/pyevent.hh"
 %include "sim/eventq.hh"
 
+// This must follow eventq.hh
+%include "python/swig/pyevent.hh"
+
 struct CountedDrainEvent : public Event
 {
     void setCount(int _count);