android.jar should be loaded from the local android sdk installation and not shipped with the engine.

[riccardobl]

Also, would it be possible to make the build script download lib/android.jar from an official source?
It would be preferable than uploading a mistery jar to the repo.

I agree but a previous file of this one was included this way before and honestly I don't know where I could get this jar directly from the net. Android.jar is extracted to platform path of android sdk when installing it. Maybe adding a copy action to the gradle scripts as the sdk dir is set in the local.properties file?

If this is a dependency, gradle can just load it from the sdk folder. [...]

Originally posted by @riccardobl in #1147 (comment)