[crossfire] Code cleanlieness and server stability

[Mark Wedel]

Alex Schultz wrote:
> I have a hunch this is one of those cases where the object is modified 
> after creation. I'm not really sure, but perhaps it's something similar 
> to the old bug with spellbooks losing their spell when thrown (which is 
> a bug that I think has been fixed).

  Perhaps.  But if one was going to use this backtrace() functionality, could 
also put hooks in for insert_ob_in_{ob/map} calls as well as remove_ob calls, so 
one could perhaps get some clearer idea on the history of the object