am ceb8465e: am 87bb1857: Merge changes I2337051b,I19b426cb into gingerbread

Merge commit 'ceb8465e974ba5fa971ffe1b5b74e94a1bd53f97'

* commit 'ceb8465e974ba5fa971ffe1b5b74e94a1bd53f97':
  Tweak ObbFile class
  Allow things that can install packages to set Obb paths