update to pythia 8.201 with patch to fix problem with multiple initializations for diffractive processes (ie minbias)
Merge pull request #1187 from bendavid/py8201_71x

update to pythia 8.201 plus multiple initialisation patch (71x)
Merge remote branch 'origin/IB/CMSSW_7_1_X/stable' into IB/CMSSW_7_0_X/stable