make python operator instances subclasses of the wmOperator when called.

was subclassing the operator's type before.

Removes the need for passing self.__operator__, can pass self directly.

release/scripts/ui/space_view3d.py

@@ -1553,7 +1553,7 @@ class OBJECT_OT_select_pattern(bpy.types.Operator):
     '''
     def invoke(self, context, event):
         wm = context.manager
-        wm.add_fileselect(self.__operator__)
+        wm.add_fileselect(self)
         return ('RUNNING_MODAL',)
     '''