Setting shepherd log dir

[nils]

Hello,

with 1c30d5a6bfc5d48137f4bdcc271189a06fdc6ed3 , my (user) mcron log file 
changed from ~/.local/state/log/mcron.log to ~/.local/state/shepherd/mcron.log 
(though strangely this did not seem to take effect until 
552d0703776c532f25498d5cb852c3c497cb9252 et. al.).

I prefer the old location, and changed it back with home-mcron-configuration 
(which is missing the documentation for the log-file option, but I found it in 
the code).
However, if I ever use one of the other services utilizing %user-log-dir, it 
will also log to ~/.local/state/shepherd/ .
So I think it would be great to overwrite %user-log-dir, but I haven't found a 
way to do so. Does anyone have any ideas?

Nils