skolemize a graph when loading

[Paul Tyson]

I searched the source and docs but didn't turn up any easy way to 
skolemize an input graph before loading to fuseki. The skolemization 
capabilities appear to be related to the reasoners, which I don't need.

I expect there's a good reason for this missing feature, but wanted to 
ask if I've missed something. I probably don't need it badly enough to 
build something for it. It would be better if the dataset came to me 
with the necessary node ids, but am considering if it's worth putting in 
a fixup routine.

Thanks
--Paul