UBIFS 2.6.25 - 2.6.27 back-ports

[Artem Bityutskiy]

Hi, just FYI, I'm going to drop UBIFS 2.6.25-2.6.27 support once 2.6.32
is out. The trees will stay there, but I won't back ports stuff.

-- 
Best Regards,
Artem Bityutskiy (Артём Битюцкий)