Created standard Android makefile

To build:
NDK_PROJECT_PATH=$PWD /opt/android-ndk-r8e/ndk-build APP_BUILD_SCRIPT=Android.mk -j4

Where NDK_PROJECT_PATH is the edelweis directory and "-j4" is the number of CPU cores (for parrallel build) and /opt/android-ndk-r8e is where your Android NDK is installed