[crossfire] huge money bug

[Preston Crow]

A player alerted me that using alchemy, you can convert a huge gold 
nugget into a ridiculous number of smaller nuggets that you can actually 
pick up.  While the economy in the game tends to break down for higher 
level characters, it wouldn't be a bad idea to fix the worst of the abuses.

It's probably worth examining all uses of arch hugenugget, though the 
two in navar_city/mlab/ttower28 are the ones my player cited.