Android build fix for old devices (eg Android 7, 8) entails building
an older libpng version 1.6.25, which does not depend on newer zlib (>1.2.8)
than found on those older devices, later versions using
'inflateValidate' in newer zlibs crash on those older devices
fix: check out tag 'v1.6.25' in libpng, use suitable 'Android.mk' file
Android build fix for old devices (eg Android 7, 8) entails building an older libpng version 1.6.25, which does not depend on newer zlib (>1.2.8) than found on those older devices, later versions using 'inflateValidate' in newer zlibs crash on those older devices
fix: check out tag 'v1.6.25' in libpng, use suitable 'Android.mk' file
fixes issue https://github.com/ReinhardPrix/FreedroidClassic/issues/40
also fix end-game crash due to trying to play mikmod file 'commando.mod' instead of converted .ogg file