this is a prerequisite to fixing llDialog issues for the latest Linden viewers, since they are now making use of a new OwnerData field in the ScriptDialog message
Main reason for upgrade is to revert API change that was introduced in order to support headerless binary LLSD decoding needed for deserialization of the mesh assets, which turned out to be unnecessary as we can transparently decode both kinds.
Justin Clark-Casey (justincc)