Argh. Clones appear broken in latest CVS.

For the moment, I'm assuming it was me, as I did a relatively large repr-related commit recently.

I'm a bit puzzled though; the work I did was almost entirely reorganizing code around rather than changing algorithms, and clones were one thing I tested with the new code. Maybe I was lucky and hit a particular corner case that still worked... I'll experiment more.

FWIW, so far as I can tell everything still functions correctly up through sp_use_build, at least. I'll continue to narrow things down, but if anyone has any ideas that would help.

Also, the one set of algorithms I _did_ change were the implementation sp_repr_position/sp_repr_set_position (the guts are now in xml/simple-node.cpp). If someone could review my changes to make sure I didn't do anything stupid there, that'd be much appreciated.

-mental