Please unblock why/2.13-2

[Mehdi Dogguy <mehdi@dogguy.org>]

Hi,

Please unblock why/2.13-2. It removes a dependency and corrects two
important bugs.

Changelog:

* Using why-cpulimit instead of cpulimit Debian package, closes: #498485.
* Renaming 'dp' into 'why-dp', closes: #499140.
* Remove unnecessary dependency : cpulimit.

Thanks,

--
Mehdi