Changes to tinydns to make it work with multiwan setup's and other minor fixes

Changed tinydns to work correctly in multiwan setup's.
1 able to select on which interface to ping monitorip's
2 use hostname instead of ipaddress to make the pkgpinghost list (hostname is, unique ipaddess is not)
3 changed the startup scripts for tinydns.sh and svscan.sh creation to correct so bugs
4 added some config parameters to make this all work