Serialization for D. Comments, please!

[BCS]

Hello Bill,

> I'll also add that you should be able to properly
> serialize/deserialize a BaseClass pointer that actually points to a
> DerivedClass.
> This is pretty tricky to get working seamlessly when combined with the
> external serialization requirement.
> H3r3tic's xpose library has this working IIRC.
> --bb


The current version of the code has this working. It was fairly high on my 
feature list.