An Android Studio Project based on ndkLibPrebuilts from gradle-samples-0.11.zip in Android Tools Project Site - New Build System.
In this version, the following configuration is used: Android Studio 0.6 Gradle plugin 0.11
The C code has been built into shared objects. The shared objects are located in jniLibs under app/src/main.
In ndkLibPrebuilts, the prebuild library is in the same package as the view activity. I've written a new Java wrapper for the prebuild library so that it could be in a separate package from the view activity.