travis: first build with clang, then with gcc, move the kernel checking job to be the last job.
ValueFlow: improved abstract interpretation of for loops
Fixed #5498 (C++0x11 default values for class fields and missing constructor)
Merge pull request #274 from matthiaskrgr/travis

travis: first build with clang, then with gcc, move the kernel checking job to be the last job.
ValueFlow: Improved abstract interpretation
Avoid loading libraries multiple times in test suite
-> Massive speedup for test suite (especially on slow systems)
Fixed two visual studio warnings