[IMPROVED] Type of Master Password counter is unsigned int; Guava's
UnsignedInteger allows us to better enforce that in code,
fixing a few places where ints were treated badly, limiting
counter support.
[ADDED] An integrity test activity to the Android app to ensure the
Android device properly generates the expected passwords
before allowing the user to rely on it.
[UPDATED] Made standard test suite available for all without needing
JAXB; implemented SAX reading of mpw_tests.xml + a good API
for running the tests and getting feedback at runtime.
f782b2ef62