Merge pull request #573 from smuzaffar/IB/CMSSW_5_3_X/stable

create build-errors file in case compilation failed
move to pythia8 185
Merge pull request #620 from mkirsano/topythia8185_53X

move to pythia8 185
updated scrama nd config tags
updated config tag with has fix for boost
updated scram version to V2_2_5_pre7 to avoid perl module dependency