Merge changes If2f987fe,Iedf42cbc

* changes:
  Fix layer rendering glitch.
  Don't draw TextView's alpha layers when not needed.
tree: 53e6c845d9d03f0136fe9aa7e7c195ca75ea0052
  1. cmds/
  2. include/
  3. libs/
  4. opengl/
  5. services/
  6. vpn/
  7. MODULE_LICENSE_APACHE2
  8. NOTICE