Include java resources in app bundles

The java resources are merged into the dex jar, split them back
out into the root/ directory for merging into the bundle.
Also avoid running zip2zip when dexJarFile is nil by splitting
each munge step out into its own rule.

Bug: 117295826
Test: tapas RecoveryLocalizer && m dist
Change-Id: Ia22c8768bf2c3c6884792e923caf7624b4f76664