[horde] Horde logging

[Kevin Konowalec]

Is there an easy way (ie by modifying a config file somewhere) to add  
additional information into the horde logs (ie browser type, etc)  
without modifying the source code?  I'd rather not make any local non- 
cosmetic code modifications if I can avoid it (to keep it in line  
with the official releases).

I've set up a log server and will finally be able to pull meaningful  
statistics from horde but not having all the information I need in  
one file is a bit of a pain...