am 816cf52a: Fix the DEFAULT_SORT_ORDER value for media files. Changing this is OK, because existing app will have the old value compiled in as a literal, and so will continue to (not) work in the same way as before. Add code to media key generator to give a leading a

Merge commit '816cf52abd8f45770f0ac922bbb819184ed4b90f'

* commit '816cf52abd8f45770f0ac922bbb819184ed4b90f':
  Fix the DEFAULT_SORT_ORDER value for media files. Changing this