Bug#737584: pkg-config file references non-existing file to link against

[David Suárez]

control: affects 737584 + actionaz frei0r mldemos sikuli sivp

This bug is affecting the next pkgs (find build logs in [1]):

 - actionaz
 - frei0r
 - mldemos
 - sikuli
 - sivp

[1] http://aws-logs.debian.net/ftbfs-logs/2014/02/08/