support gamepad remapping on android
Created by: Hinsbart
Also fixes #1839 (closed)
I could only test this with one gamepad, as that's the only one recognized by my phone (ps4 pad, sony z2/android 5.1.1). So some further testing would be appreciated. I think it should be good to go if the following conditions are met:
- Works on Android < 4.0
- Actual sdl mappings work. Right now the only one we have is for the nvidia shield, so it would be cool if someone can check that thing.
APKs for testing (arm only): joystick-demo.apk.zip joystick-mapping.apk.zip