CMSSW_5_3_31

Changes since CMSSW_5_3_30:

compare to previous

1. 12189 from @mkirsano: remove evtgen plugin in Pythia8Interface 53X generators created: 2015-10-29 20:04:38 merged: 2015-11-05 15:59:23

2. 12083 from @mkirsano: Backport features and 212 compatibility from 71X generators created: 2015-10-24 19:28:48 merged: 2015-10-28 08:05:42

3. 11806 from @heppye: Create Bd_JpsiKpi_PHSP.dec generators created: 2015-10-14 22:40:24 merged: 2015-10-28 08:05:18

CMSDIST Changes between Tags REL/CMSSW_5_3_30/slc6_amd64_gcc472 and REL/CMSSW_5_3_31/slc6_amd64_gcc472:

compare to previous

1. 1937 from @mkirsano: upgrade pythia8 to 212

2. 1866 from @smuzaffar: updated config tag which fixes the unit test prefix command