Make -k a simple non-bool option.

[Jeremy Allison]

On Fri, May 21, 2010 at 12:05:07PM +1000, Andrew Bartlett wrote:

> Given that this patch breaks 'make test', was it so urgent that it could
> not have been put in a branch until I looked at it?  

Others examined it, so it did get reviewed, just not by you. The
consensus was it was the right thing to do, so I pushed it. It
was inexcusable to break 'make test', so I'm sorry about that,
I won't do that again (knowingly, of course :-).

Jeremy.