Make MarshalledInstance an immutable object, rather than effectively immutable, so it is safely published when constructors and deserialization completes.
Make MarshalledInstance an immutable object, rather than effectively immutable, so it is safely published when constructors and deserialization completes.

git-svn-id: e208463f0da49ce01d17e17a21a9293a7ba6b26a@1498337 13f79535-47bb-0310-9956-ffa450edef68

pfirmstone/JGDMS,pfirmstone/JGDMS,pfirmstone/river-internet,pfirmstone/JGDMS,pfirmstone/JGDMS,pfirmstone/river-internet,pfirmstone/river-internet