REG: Android: Removal of splash screen breaks compilation of existing apps

We need to remain backwards-compatible with AndroidManifest.xml included in applications from earlier versions.

In change 4d08d80be60af14c5daed7c6f8d37538aea6c429, the splash screen was removed from the application template.

Since the default manifest previously contained the following line:

<meta-data android:resource="@layout/splash" android:name="android.app.splash_screen"/>

and the @layout/splash resource was removed, all applications which added the default manifest to their source will no longer compile.

So the change in question is not source compatible. We need to put the splash resource back, even if it isn't used.