Integrate tor-android build files directly into tor.git
We should provide all the scripts, gradle configurations, etc necessary for building tor for Android in the primary tor repository. This would be inline with the "/mobile" approach that Mozilla takes with Firefox/Fennec.
The result would be that we could generate tor android gradle dependency AAR files, for use by any application looking to include tor, with nothing more than tor.git and the right Android SDK/NDK installed
This is the current "crufty" project for building tor for android: https://github.com/n8fr8/tor-android