RFR (S): 8076463: Add logging for the preserve CM referents task

[Thomas Schatzl]

Hi Jon,

On Thu, 2016-02-25 at 09:10 -0800, Jon Masamitsu wrote:
> 
> 
[...]
> > If you think it is still better to call preserve_cm_referents()
> > within
> > process_discovered_references(), I will change it.
> 
> You can leave the change as is.
> 
> Reviewed.
> 

Thanks a lot for your quick reviews.

Thomas