Fix dogstatsd, needs procps in path.

(cherry picked from commit ecdb0f7867007b2e5ae0d14a0994d3b502d90fa7)
berlios.de probably shut down, replace it

The shutdown was announced years ago, only now it stopped working.
fix eval after previous commit
Fix fallout from 4f27ad14

Signed-off-by: Austin Seipp <aseipp@pobox.com>
Merge branch 'master' of https://github.com/robberer/nixpkgs