when "-P port" is specified. It invoked svc{tcp,udp}_create()
for only one of the two allocated sockets, and prevented the
TCP socket from binding to as the result.
- Use TI-RPC functions and handle sockets in a
transport-independent way. At this moment only AF_INET ("udp"
and "tcp") is supported because others need rewrites of ACL
handling and yp clients.
- Add '-h addr' to specify addresses to bind to.
- Convert _msgout() to use variable argument lists and remove
asprintf() for error strings.
- Remove register storage class specifier.
Discussed with: kuriyama
MFC after: 1 week