Fixed #6009 (Detect type mismatch in printf-like function when type is returned)
Run cheaper check first, don't check the same condition twice.
Suspicious string comparison: Refactoring using AST. Fixed FP in Lac.
Fixed #6011 (crash: libreoffice/binfilter svt_enhwmf.cxx)
travis: replace kernel check with clang check.

Check clang instead of kernel, which is a lot faster.
Make clang check failure fatal to the build.
travis: add -DCHECK_INTERNAL to the VERIFY=1 job to automatically fetch issues like #5869 via travis, check clang with --exception-handling
travis: make clang check sensitive to internal cppcheck errors.
travis: update clang repo hash
travis: suppress current warnings, make cppcheck not crash the files in clang that crash currently.
Merge pull request #381 from Dmitry-Me/checkBooleanFlagFirst

Run cheaper check first, don't check the same condition twice.
Merge remote-tracking branch 'matthiaskrgr/travis'