New normalization

Relatively bigger merge request. Here, everything returned from an algorithm is normalized to an object in a deep-like manner so that it may be denormalized again for parameters in an algorithm call.

This allows for a simpler xml parsing, to string composing, inside aql set construction, etc. (Not mentioning transparent handling of types (set parameter may bind, after denormalization, also to set, or Object as long as they in fact store set.)

More in-person, if needed.

I had to extern some more template classes to decrease the memory footprint of the change. I still have some hidden in my sleeves, but these can wait since it seems those in place are enough.