Nandwrite's behavior in case of write failure

[Nahor]

Artem Bityutskiy wrote:
> I wonder, it it would make sense
> to use libmtd.c from UBI utils and re-write nandwrite? Of course
> libmtd.c would need to be improved as well. But the benefit would be
> shared code between ubiformat and nandwrite.

I've been thinking that too. Unfortunately, I've too much work on my
hands already and I don't have the time for things that are not strictly
necessary. :(