[crossfire] Armour restriction / girdle

[Nicolas Weeger (Laposte)]

Hello.

A change made girdles be considered armours for the 'no armour' god 
restriction.
This is a really heavy change, especially for dragons or fireborns, so I 
unilaterally reverted it :)

If we really want to make girdles not wearable when no armour is set, i think 
there should be some compensation for some classes :)

Nicolas