Add -lresolv to the libraries on UnixWare 7 so that DSOs that need

it (e.g. PHP) work OK. (How come I forgot to add this to the CHANGES
file three days ago?)
PR:   6780


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@86838 13f79535-47bb-0310-9956-ffa450edef68