Add option to pass -fix to clang-tidy in make tidy
Add option to pass -fix to clang-tidy in make tidy

This modifies source, so is DANGEROUS!!

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