[crossfire] Build command

[Anton Oussik]

Hmm, actually I think it would be a good idea to nerf existing
alchemy. It would go a long way towards fixing the game balance. At
the moment being a pure alchemist is far too easy (money-wise). I
would also nerf experience gained up though, to make success more
rewarding and eliminate the "identification" stage where you have to
aimlessly ID things with alchemy until you can make simple stuff
reliably.