Android Completion for launching main() class via MainLauncher; Fix ActivityLauncher order of delegation/super activity callbacks.

- StaticContext:
  - Add ViewGroup for standalone tests w/ UI

- MainLauncher/LauncherUtil:
  - Complete launching a main() class from our activity launcher
  - adding main-cmdline-args

- ActivityLauncher
  - Fix order of delegation/super activity callbacks.
Buffers: Fix typo
RecursiveLock.getHoldCount(): Fix API doc formatting
test script