[dns-operations] getting closure on dnscap option set

[Joao Damas]

Summary of changes (rest of options remain the same). I think I  
collected everyone's comments (-s stays for direction as -d means  
debug, a real nice thing to have when you are trying to make sense of  
unexpected results)

-P : promiscuous capture (was -a)
-b : brief, one line per packet output in a close to fixed size  
format (new feature)
-s direction
-m opcode (qnr) : query, notify, response
        [** error reporting is toggled via -e now **]
-w output file (was -b, uses same syntax)
-r input file (was -o)

changes to -q and -r (there is a need for the NOT functionality):

   -a ip address : initiator
   -z ip address : responder
   -A ip address : initiator NOT this IP address
   -Z ip address : responder NOT this IP address


Comments?

Joao