* support/nfs/rpcmisc.c (rpc_init): Call svctcp_socket and
svcudp_socket if port is unspecified.
* utils/nfsd/nfsd.c (main): Call getservbyname for port.
* utils/rquotad/rquota_svc.c: Include <nfslib.h>.
(killer): New. Signal handler to unregister.
(main): Use killer. Call svcudp_socket to get the default
socket.