Merge pull request #1153 from smuzaffar/IB/CMSSW_5_3_X/slc6_amd64_gcc472

used latest SCRAM and config tag
Merge pull request #1155 from smuzaffar/IB/CMSSW_5_3_X/slc6_amd64_gcc472

SCRAMV1: add BuildRequires on gmake
update to pythia 8.201 with patch to fix problem with multiple initializations for diffractive processes (ie minbias)
Merge pull request #1188 from bendavid/py8201_53x

update to pythia 8.201 plus multiple initialisation patch (53x)
updated for CMSSW_5_3_23