aufs: tiny, convert' debug' into atomic_t

Signed-off-by: J. R. Okajima <hooanon05@yahoo.co.jp>
Merge branch 'aufs3.2/00base' into aufs3.2/01modular
Merge branch 'aufs3.2/01modular' into aufs3.2/30stdalone
Merge branch 'aufs3.2/00base' into aufs3.3/00base
Merge branch 'aufs3.2/01modular' into aufs3.3/01modular
Merge branch 'aufs3.2/30stdalone' into aufs3.3/30stdalone
Merge branch 'aufs3.3/00base' into aufs3.3/01modular
Merge branch 'aufs3.3/01modular' into aufs3.3/30stdalone
Merge branch 'aufs3.3/00base' into aufs3.4/00base

Conflicts:
	fs/aufs/debug.h

Signed-off-by: J. R. Okajima <hooanon05@yahoo.co.jp>
Merge branch 'aufs3.3/01modular' into aufs3.4/01modular

Conflicts:
	fs/aufs/debug.h

Signed-off-by: J. R. Okajima <hooanon05@yahoo.co.jp>
Merge branch 'aufs3.4/00base' into aufs3.4/01modular
Merge branch 'aufs3.3/30stdalone' into aufs3.4/30stdalone

Conflicts:
	fs/aufs/debug.h

Signed-off-by: J. R. Okajima <hooanon05@yahoo.co.jp>
Merge branch 'aufs3.4/01modular' into aufs3.4/30stdalone
Merge branch 'aufs3.4/00base' into aufs3.5/00base
Merge branch 'aufs3.4/01modular' into aufs3.5/01modular
Merge branch 'aufs3.5/00base' into aufs3.5/01modular
Merge branch 'aufs3.4/30stdalone' into aufs3.5/30stdalone
Merge branch 'aufs3.5/01modular' into aufs3.5/30stdalone
Merge branch 'aufs3.5/01modular' into aufs3.6/01modular
Merge branch 'aufs3.6/00base' into aufs3.6/01modular