See comments in Android.mk

When compiling an APK, follow roughly these steps

1. create dir <NDK>/jitterentropy
2. copy AndroidManifest.xml to <NDK>/jitterentropy
3. copy code and Android.mk to <NDK>/jitterentropy/jni
4. cd <NDK>/jitterentropy
5. open eclipse and import project
6. on console android update project -p . -s
7. ../ndk-build
8. in eclipse: open manifest and compile

am start -n de.chronox.jitterentropy/android.app.NativeActivity