This adds a simple voice translator Android app that uses
the JNI bindings to the PGF C runtime.
Caveats:
- Since the C runtime doesn't compile for Android right now,
I've bundled an old copy, along with its Java bindings.
That should be removed once the C runtime compiels for Android
again.
- Adding an automated build would be nice.
- Replacing the grammar requires editing a Java file, that should
really be more dynamic.
