DSS2 — Simulation specification issue

The High Level Archicture Programmers Guide states
(8.3) Encoding and Object Updates:
"When producing an AHVPS [AttributeHandleValuePairSet, Ralf.],
the federate is responsible for any data marshalling (encoding)."

This principles has been transferred to the DSS proposal,
but encoding is what ORBs are good for;
a participant in distributed simulation should not explicitly handle it.

Attribute type names will be listed in the FOM/SOM description
and are mapped to RTI internal handles,
but that does not help with generating or interpreting value encodings.

As we already have a runtime type information packager (CORBA Any),
we should use it and replace all occurences of "AttributeHandleValuePairSet"
at least with "any", so a common coding scheme will be used.
The same holds for HLA interaction parameters.