Update - the manual work around I mentioned does not seem to work. So unfortunately at the moment Corona SDK does not support you fully localizing an Android app 
Some background with trying to use the manual work around unpack/alter package/repackage approach : Whilst I got this approach working for a test app (hello world), I still can’t get it to work my actual app. It actually now installs, but when you run it it fails…I note in the log file items like the below:
Wondering if there is an issue with the technique for apps that are using Corona Plugins?
E/AndroidRuntime(26903): FATAL EXCEPTION: main
E/AndroidRuntime(26903): Process: au.com.mixedup.Parachutist, PID: 26903
E/AndroidRuntime(26903): java.lang.IllegalStateException: A fatal developer error has occurred. Check the logs for further information.
E/AndroidRuntime(26903): at com.google.android.gms.internal.u$f.a(Unknown Source)
E/AndroidRuntime(26903): at com.google.android.gms.internal.u$f.a(Unknown Source)
E/AndroidRuntime(26903): at com.google.android.gms.internal.u$b.A(Unknown Source)
E/AndroidRuntime(26903): at com.google.android.gms.internal.u$a.handleMessage(Unknown Source)
E/AndroidRuntime(26903): at android.os.Handler.dispatchMessage(Handler.java:102)
E/AndroidRuntime(26903): at android.os.Looper.loop(Looper.java:137)
E/AndroidRuntime(26903): at android.app.ActivityThread.main(ActivityThread.java:4998)
E/AndroidRuntime(26903): at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime(26903): at java.lang.reflect.Method.invoke(Method.java:515)
E/AndroidRuntime(26903): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:777)
E/AndroidRuntime(26903): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:593)
E/AndroidRuntime(26903): at dalvik.system.NativeStart.main(Native Method)
and warnings appear:
V/Corona (26903): > Class.forName: CoronaProvider._native.popup.social.LuaLoader
V/Corona (26903): WARNING: Could not load ‘LuaLoader’
W/System.err(26903): java.lang.ClassNotFoundException: CoronaProvider._native.popup.social.LuaLoader
W/System.err(26903): at java.lang.Class.classForName(Native Method)
W/System.err(26903): at java.lang.Class.forName(Class.java:251)
W/System.err(26903): at java.lang.Class.forName(Class.java:216)
W/System.err(26903): at com.ansca.corona.NativeToJavaBridge.callLoadClass(NativeToJavaBridge.java:375)
W/System.err(26903): at com.ansca.corona.JavaToNativeShim.nativeRender(Native Method)
W/System.err(26903): at com.ansca.corona.JavaToNativeShim.render(JavaToNativeShim.java:163)
W/System.err(26903): at com.ansca.corona.Controller.updateRuntimeState(Controller.java:234)
W/System.err(26903): at com.ansca.corona.graphics.opengl.CoronaGLSurfaceView$CoronaRenderer.onDrawFrame(CoronaGLSurfaceView.java:399)
W/System.err(26903): at com.ansca.corona.graphics.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1622)
W/System.err(26903): at com.ansca.corona.graphics.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1377)
W/System.err(26903): Caused by: java.lang.NoClassDefFoundError: CoronaProvider/_native/popup/social/LuaLoader
W/System.err(26903): … 10 more