Update physfs with msvc fixes
Update physfs with msvc fixes

steveschnepp/OpenApoc,AndO3131/OpenApoc,agry/x-com,FranciscoDA/OpenApoc,Istrebitel/OpenApoc,ShadowDancer/OpenApoc,agry/x-com,steveschnepp/OpenApoc,agry/x-com,FranciscoDA/OpenApoc,AndO3131/OpenApoc,Istrebitel/OpenApoc,pmprog/OpenApoc,pmprog/OpenApoc,AndO3131/OpenApoc,FranciscoDA/OpenApoc,ShadowDancer/OpenApoc