unreal - services are logged in as *

Hi

On UnrealIRCd 3.2 (without UID) all nicks introduced by atheme are logged in as *:

````
/whois ChanServ
* [ChanServ] (ChanServ@xxxx): Channel Services
* [ChanServ] is using modes +ioS 
(...)
* [ChanServ] is a Network Service
* [ChanServ] is logged in as *
````
Based on syzop's comment on unreal's [bugtracker](http://bugs.unrealircd.org/view.php?id=3966#c16841): 
>I was informed by an anope dev that it did break some of their versions. I've therefore just committed a change that makes the servicestamp default to '0' again (instead of '*'), just like it always was.

I've made a (very small) patch which fixes this, I believe, bug. Please review the code, because I don't have Unreal 3.4 (maybe it requires the change from * to 0 too). 

Keep up the good work!