aufs3 and aufs4 GIT release

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

aufs4.x-rcN branch in this release is for linux-v4.7-rc3, and it doesn't
pass my local tests. I am still working on it.

o bugfix
- debug-print before dput()
- missing null-test for inode before refreshing it

o misc
- aufs4.x-rcN for linux-v4.7-rc1 supports for the paralle readdir (and
RDU).


J. R. Okajima

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

- aufs3-linux.git
aufs: possible bugfix, debug-print before dput()
aufs: possible bugfix, missing null-test for inode before refreshing it

- aufs3-standalone.git
ditto

- aufs4-linux.git#aufs4.0..aufs4.4 branch
ditto

- aufs4-linux.git#aufs4.5..aufs4.6 branch
Addition to above,
aufs: for linux-v4.5, cosmetic, rename "imtx" "inode"

- aufs4-linux.git#aufs4.x-rcN branch
Addition to above,
aufs: for linux-v4.7-rc1, debug, IMustLock() becomes less meaningful
aufs: for linux-v4.7-rc1, parallel readdir and RDU

- aufs4-standalone.git
ditto

- aufs-util.git
none