Merge pull request #1054 from bendavid/pythia8200pre2

Pythia8.200pre2
Merge pull request #1065 from bendavid/pythia8_200pre2_71x

Pythia 8.200pre2 (71x)
Merge remote branch 'origin/IB/CMSSW_7_1_X/stable' into IB/CMSSW_7_0_X/stable