Bug#476455: exiwhat of exim4-base requires killall but it does not depend on psmisc package to ensure killall is installed

[Marcin Orlowski]

Marc Haber wrote:

 > The most we're gonna do is patch exiwhat to give a more verbose
 > message along the lines "exiwhat can only work if the psmisc package
 > is installed".

I think that's acceptable compromise. Thanks.

Marcin