remove many thread_local
factor 2 less
factor 2 less
factor 2 less
remove many thread_local
Merge pull request #4293 from VinInn/TLScleanup

TLS cleanup
remove unused declaration
Merge pull request #4314 from gartung/clangSA-fix-warning-unused-expr

Remove unused declaration
Merge remote branch 'origin/CMSSW_7_2_X' into CMSSW_7_0_X