Sign the Mono.Android.dll, Mono.Android.Export.dll,
Xamarin.Android.NUniteLite.dll with the Xamarin.Android public key.
This will allow external contributors to seamlessly update their apps
with a custom Mono.Android.dll for bug fixes/etc. without errors [0]:
@borgdylan:
Mono.Android.dll does not have a public key...
This causes compile errors when using teh support library v4.
[0]: https://gitter.im/xamarin/xamarin-android?at=572da219f36daf63798d6151
Jonathan Pryor