Depend on package names instead of executables
    
    Apparently not all deps have relocated from /usr/bin to /usr/bin yet. To
    avoid needless changes in gnome-nettool when another dep is relocated
    because of UsrMove, just depend on the package names for now.
    
    Fixes broken deps on /usr/bin/netstat, /usr/bin/traceroute6,
    /usr/bin/traceroute.