* Handle ++x as well as x++ while converting.
* Add special case handling where normal conversion would not work
  (some APIs have special names)
* Fix conversion for function calls involving ifnet

Submitted by:	Sreekanth Rupavatharam <rupavath@juniper.net>
Obtained from:	Juniper Networks, Inc.
Introduce $RA_SERVER to set default whois server.

Requested by:	nork
Reviewed by:	nork
MFC after:	1 week