[crossfire] Various adjustments

[Nicolas Weeger]

Hello.

Been playing some lately, and I noticed a few things I'd like to change.


I think the following commands should be made DM-only, if needed adding the 
player to affect:
- fix_me
- forget_spell
- printlos


Moving in diagonals should cost more than moving horizontally or vertically ; 
ok, that one is potentially a major change, but it makes it faster to move in 
zigzags than plainly straight...


"usekeys" should by default be set to "containers". It has the potential to 
confuse new players who activate a sack but don't know that command (or should 
that be totally removed and keys used automatically anyway?)



Best regards

Nicolas