aufs6 GIT release (v6.16)

[J. R. Okajima]

o news
- for linux-v6.16 is released and aufs6.16 follows
  aufs source files are not changed since last release.
- aufs6.6..aufs6.11 are not supported anymore
  my local development base is aufs6.12 now.

J. R. Okajima