Add clang-tidy pass on clang travis builds
Add clang-tidy pass on clang travis builds

AndO3131/OpenApoc,AndO3131/OpenApoc,AndO3131/OpenApoc,FranciscoDA/OpenApoc,FranciscoDA/OpenApoc,pmprog/OpenApoc,steveschnepp/OpenApoc,steveschnepp/OpenApoc,Istrebitel/OpenApoc,ShadowDancer/OpenApoc,ShadowDancer/OpenApoc,Istrebitel/OpenApoc,FranciscoDA/OpenApoc,pmprog/OpenApoc