[DGD] Upgrading clones with changed internal representation

[Shentino]

What I suggest is using call_touch on the clones so that you can
upgrade them the instant they're played with.  Sorta like java's
"JIT", only with upgrading.  The point is that the clone would be
upgraded "just in time".  A background of 0-second callouts to mop up
the clone mob in the meantime would keep things neat in any case.

At any rate, you'll need to make sure that any clone can be upgraded
on the spot the moment it's been played with after an upgrade.  To do
that, you'll either need to catch old clones as they are found (or
used), or put the mud on hold while you upgrade everything.

A good solution would probably be something like Skotos's "patch" thingy.