make ports/net GNOMENG aware

Fix: net/amcl
    net/dctc-gui
    net/driftnet
    net/edonkey-gui-gtk
    net/everybuddy
    net/geotrace
    net/ggsd
    net/gicq
    net/gkrellm_snmp
    net/gkrellmqst
    net/gkrellmwireless
    net/gnomba
    net/gnome-vnc
    net/gnomemeeting
    net/gnugadu
    net/gnunet
    net/gq
    net/gtk+licq
    net/gtk-gnutella
    net/gtkhx
    net/gtkyahoo
    net/ickle
    net/icukrell
    net/ipsorc
    net/jags
    net/linpopup
    net/mbrowse
    net/mtr
    net/napshare
    net/netscript
    net/pfinger
    net/sambasentinel
    net/staticcharge
    net/tvark
    net/wmlj
    net/xtraceroute
    net/xwhois
    net/ymessenger
How-To-Repeat: 
    n/a