XMLRPC in GRC 3.9

[Marcus D. Leech]

I've noticed that the XMLRPC implementation in GRC 3.9 is lacking the 
"logging" option in the block so there's no way to turn off
  the very-chatty logging that is normally done.  In GRC 3.7 there was 
a"logging" parameter that you could turn off, and it was OFF by
  default.