[vos-d] Message handler problem

[Reed Hedges]

Ran into a slightly confusing thing that VOS does:

If a base class registers a message handler, but then a subclass of that
base class is the metaobject that's actually instantiated, then no
messages can be delivered to that handler-- it seems that the list of
handlers is keyed on typeid names, and VobjectBase is only able to find
the handlers associated with the typeid of the subclass, not the base
class.

Any ideas on how we can fix this in VOS?

Reed