aufs4 GIT release (linux-v4.10-rc1)

[s***@users.sourceforge.net]

This release contains a possible bugfix about syncfs(2), but the commit
is not enough. It will be refined soon.

o bugfix
- possible bugfix, missing s_umount rwsem for branch fs' sync_fs
- for v4.9, support posix acl, reported by Justin Cormack.
- aufs-util.git libau: closedir, clear errno explicitly, repoted by
OmegaPhil.

o news
- linux-v4.[678] are marked as EOL, so are aufs4.[678]. It means these
versions are maintained and supported, but less tested.
- master and aufs4.x-rcN branches in this release are against
linux-v4.10-rc1. It didn't pass my local tests, which means that they
are "don't use" version.

o misc
- support smack_d_instantiate() which calls i_op nestedly, reported by
Arun Chandran.
- linux-v4.10-rc1, signature of fsnotify_ops->handle_event
- linux-v4.10-rc1, vfs_readlink
- the date in the version string is 20170130 (yes, I am releasing a
little bit earlier).


J. R. Okajima

----------------------------------------

- aufs4-linux.git#aufs4.1..aufs4.8 branch
aufs: support smack_d_instantiate() which calls i_op nestedly
aufs: possible bugfix, missing s_umount rwsem for branch fs' sync_fs

- aufs4-linux.git#aufs4.9 branch
Addition to above,
aufs: for v4.9, support posix acl

- aufs4-linux.git#aufs4.x-rcN branch
Addition to above,
aufs: linux-v4.10-rc1, signature of fsnotify_ops->handle_event
aufs: linux-v4.10-rc1, vfs_readlink

- aufs4-standalone.git
ditto

- aufs-util.git
libau: closedir, clear errno explicitly
fix a wrong spelling