clog target from Makefile.common

[Dan Horák]

> > Removing a line for is easier for me then adding one for you.
> 
> I'm not sure if I parse that correctly, but I don't see what actual problems 
> the one line (which is already there) causes, whereas two cases by two 
> contributors have already been presented that would be negatively affected by 
> its removal.
> 

I mean that the current state is OK and I can modify the output myself.


		Dan