DQMIO in place of DQMROOT 

DQMIO replaces DQMROOT 
see: + https://hypernews.cern.ch/HyperNews/CMS/get/comp-ops/1592.html
        + https://hypernews.cern.ch/HyperNews/CMS/get/comp-ops/1587/1/2/2/1/2/2/1/1/2.html