ClassChecker should only check data classes. Script to extract ESD classes that might have thread safety issues.
fix isDataClass to search for class '' and use more robust ifstream
Merge pull request #2828 from gartung/clang-work-fix

ClassChecker should only check data classes. Script to extract ESD class...
Merge remote branch 'origin/CMSSW_7_1_X' into CMSSW_7_0_X