Check for __res_query in libresolv
Check for __res_query in libresolv

Changeset 74d6f2447f59a08c breaks builds here (Debian Jessie), because
__res_query is not found...

mcabber/loudmouth,tuxad-loudmouth/loudmouth,tuxad-loudmouth/loudmouth,mhallendal/loudmouth,mhallendal/loudmouth,mcabber/loudmouth