Refactor build to use neutal repo and populated Gradle scripts...
Persist the libs folders but not their content.  Tweak some build scripts...
Fix testing errors and add temporary repo for Android Native Player version 4.0.8
Use Android 10 (2.3.3 Gingerbread) as the lower constraint.
Merge pull request #7 from BrightcoveOS/build-refactoring

Build refactoring