Merge pull request #2 from gem-sw/CMSSW_6_2_X_SLHC

Update
New ME0 Modules
Fix geometry issue
Simplify detection of cmssw environment.
fix a few off-by-one errors in CaloTowers
fix another off-by-one error in CaloTowers
added Pythia8 status code for intermediate resonances
moved b' (pdgId=7) from partons to resonances
added map storing the original ordering of GenParticles in case pointer sorting would change it
remove obsolete file
update customization files
clean-up
Remove hardcoding in geometry definition
Create Onia_chic_jpsigamma.dec
Create Bu_chic1K_jpsigammaK.dec
Merge pull request #3269 from kpedro88/Phase2-CT6

fix a few off-by-one errors in CaloTowers
Add active timing layer in ES region
Merge pull request #3278 from bsunanda/Phase2-HE28

Remove hardcoding in geometry definition
Adding skeleton based on HcalSimProducer
Deleting a temp file