Implement numeric RPL_LISTSTART(321)

lightIRC and other clients expecting RPL_LISTSTART should now behave correctly.

Closes #207.

(cherry picked from commit 0680ce5)

src/ngircd/irc-channel.c

@@ -597,6 +597,10 @@ IRC_LIST( CLIENT *Client, REQUEST *Req )
 		}
 	}
 
+	/* Send list head */
+	if (!IRC_WriteStrClient(from, RPL_LISTSTART_MSG, Client_ID(from)))
+		return DISCONNECTED;
+
 	while (pattern) {
 		/* Loop through all the channels */
 		if (Req->argc > 0)

src/ngircd/messages.h

@@ -67,6 +67,7 @@
 #define RPL_WHOISIDLE_MSG		"317 %s %s %lu %lu :seconds idle, signon time"
 #define RPL_ENDOFWHOIS_MSG		"318 %s %s :End of WHOIS list"
 #define RPL_WHOISCHANNELS_MSG		"319 %s %s :"
+#define RPL_LISTSTART_MSG		"321 %s Channel :Users  Name"
 #define RPL_LIST_MSG			"322 %s %s %ld :%s"
 #define RPL_LISTEND_MSG			"323 %s :End of LIST"
 #define RPL_CHANNELMODEIS_MSG		"324 %s %s +%s"