am c9f7890a: Revise some javadocs for NFC; add package description

Merge commit 'c9f7890a203a013646650a695157277df81b6a17' into gingerbread-plus-aosp

* commit 'c9f7890a203a013646650a695157277df81b6a17':
  Revise some javadocs for NFC; add package description
tree: bdce8b555bc04e61b7fe28987fe8db44786797e0
  1. cmds/
  2. include/
  3. libs/
  4. opengl/
  5. services/
  6. vpn/
  7. MODULE_LICENSE_APACHE2
  8. NOTICE