am 23d26c04: Merged prebuilt NDKs for different Build OS.

Merge commit '23d26c04304e90e94e9f7ff4dbddde644010660b' into gingerbread-plus-aosp

* commit '23d26c04304e90e94e9f7ff4dbddde644010660b':
  Merged prebuilt NDKs for different Build OS.