[not quite a guide] Run Cuberite natively on Android

[Schwertspize]

Success!!! 

I successfully had it starting with my app, unfortunately it required root. As I looked around a bit, this may be related to how the binary is compiled. For now I will focus on a simple Downloader, keep that static prebuilt binary and then let you guys test the first version.

Note, that it doesn't run good if it requires root