[crossfire] requestable party lists

[Nicolas Weeger (Laposte)]

Hello.

> I have uploaded a patch to the sourceforge tracker which forms an
> initial proposal for requestable party lists.

I like the idea. Forbidding : in party name isn't too bad imo.

I looked at the patch, and have a few comments:
* not totally sure lastparty gets initialized (maybe through a memset, haven't 
checked the code on player structure initialization)
* you should definitely use snprintf instead of sprintf to send data, in 
send_party_list

Nicolas