Initial fork from the official amdroid-h repo.

Forked changelist description:
Commit:50c19118d44102f8deb39ba9dc59dc19ce4ccd9a

* Adding basic framework for the service callback.

NOTE: "parcelable android.os.Messenger" MUST be added to your android-sdk/platforms/android-{your_target}/framework.aidl
	or else this won't compile...