cms-sw/cmssw CMSSW_7_2_0

#5602 from @bendavid: Pythia 8.200pre2 (72x) fastsim generators
#5727 from @franzoni: Gen relval cmssw 7 2 0 pre7 operations
#5749 from @davidlange6: backport compilation fix reconstruction
#5715 from @perrotta: EXO Val Dev backported to 72X dqm
#5733 from @franzoni: Add pu scenarios phys14 cmssw operations simulation
#5661 from @Martin-Grunewald: HLT post-pre7 updates and fixes hlt
#5662 from @diguida: New GTs for Run1 and Run2 simulations and data (including HLT). alca
#5577 from @rjwang: update CSCTF for CMSSW_7_2_X dqm simulation
#5666 from @diguida: AK5 to AK4 migration with new Global Tags alca analysis dqm fastsim reconstruction
#5690 from @bachtis: HCAL tuning and bug fixing for Phys14 exercise reconstruction
#5686 from @cms-l1t-offline: L1t bugfix algbugfixes cmssw 7 2 x
#5670 from @silviodonato: Small update of FastPV sequence - backport 72X reconstruction
#5636 from @alja: 72x Changes in geometry search path for cmsShow tarball version visualization
#5694 from @ebouvier: Fix indices when getting trigger results dqm
#5468 from @inugent: Patch for spin observables - bug only apperent in mixed states. generators
#5532 from @jhgoh: Avoid crash of GenParticles2HepMCConverter generators
#5623 from @franzoni: set prio withing wma valid range operations
#5637 from @gartung: guard against blank lines in db.txt which cause tlf2esd.txt report to not be generated. core

cms-sw/cmsdist#1064 from @bendavid: Pythia 8.200pre2 (72x)
cms-sw/cmsdist#1095 from @Degano: Update Fireworks/Geometry.
cms-sw/cmsdist#1082 from @Degano: Update root to include global functions list lock and clang fix.

cms-sw/cmssw CMSSW_7_2_0_pre8 on GitHub