[PROPOSAL] Change (just slightly) read/write_property() and get_property_ptr_ptr() usage

Hi, I'd like to suggest a change to how the read_property object handler operates. Wouldn't it be reasonable for the engine to use get_property_ptr_ptr() whenever it wants to modify a property and get rid of using read_property() for write access? That would make rather simple ops like concatenation, in-/decrementation etc work again with overloaded internal classes. Just make the engine use read_property() followed by a write_property() when there's no get_property_ptr_ptr(). Punish me if I'm really that far off. Thoughts? -- Michael