add isInterestingLocation to filter out std template headers like <vector>
add checker cms.ThrUnsafeFcallChecker which flags calls to known thread unsafe functions
report the thread unsafe function calls in the log used by statics check
Merge pull request #5295 from gartung/clangSA-thr-unsafe-function-calls

ClangSA : add checker cms.ThrUnsafeFCallChecker
Merge remote branch 'origin/CMSSW_7_2_X' into CMSSW_7_0_X