CFR/CFT: IPv6 patch for quota (PR 42004)

PR 42004, which has been open for nearly five years, includes the patch
below to add IPv6 support to /usr/bin/quota.  This patch applies cleanly
and compiles without error, but I'm unable to test it because I use
neither IPv6 nor disk quotas over NFS.

If someone who uses IPv6 and quotas over NFS can test this patch, then
we could commit this change and close the PR.

--- usr.bin/quota/quota.c.1.18	Fri Aug  9 06:36:48 2002
+++ usr.bin/quota/quota.c	Sun Aug 25 17:43:36 2002
_at__at_ -665,26 +665,20 _at__at_
 callaurpc(char *host, int prognum, int versnum, int procnum,
     xdrproc_t inproc, char *in, xdrproc_t outproc, char *out)
 {
-	struct sockaddr_in server_addr;
 	enum clnt_stat clnt_stat;
-	struct hostent *hp;
 	struct timeval timeout, tottimeout;
  
-	CLIENT *client = NULL;
-	int sock = RPC_ANYSOCK;
+	CLIENT *client;
  
-	if ((hp = gethostbyname(host)) == NULL)
-		return ((int) RPC_UNKNOWNHOST);
+	/* XXX - If clnt_call fails, we should try other addresses and AF_ */
+	client = clnt_create(host, prognum, versnum, "udp");
+	if (client == NULL)
+		return ((int) rpc_createerr.cf_stat);
+
 	timeout.tv_usec = 0;
 	timeout.tv_sec = 6;
-	bcopy(hp->h_addr, &server_addr.sin_addr,
-			MIN(hp->h_length,(int)sizeof(server_addr.sin_addr)));
-	server_addr.sin_family = AF_INET;
-	server_addr.sin_port =  0;
-
-	if ((client = clntudp_create(&server_addr, prognum,
-	    versnum, timeout, &sock)) == NULL)
-		return ((int) rpc_createerr.cf_stat);
+	(void) CLNT_CONTROL(client,
+			CLSET_RETRY_TIMEOUT, (char *)(void *)&timeout);
 
 	client->cl_auth = authunix_create_default();
 	tottimeout.tv_sec = 25;