relay: Factorize relayJoins usage in initializeChannel and truly fix #74.

Squashed commit of the following:

commit 4e481f15db372d5c07f30e92f6581ea93692695b
Author: James Lu <GLolol1@hotmail.com>
Date:   Wed Jul 22 19:28:34 2015 -0700

    relay: Factorize relayJoins usage in initializeChannel and truly fix #74.

    The real error was that queued_users was being defined in the wrong spot (outside of the for loop),
    so the user list would grow larger and larger with every network initialized.

    This reverts parts of the previous commit which weren't actually necessary.

commit 76cc6bfbc71439880f01891f944600a26ff81130
Author: James Lu <GLolol1@hotmail.com>
Date:   Wed Jul 22 13:34:47 2015 -0700

    Mark users as internal at the IrcUser level (attempt to fix #74)

plugins/relay.py

@@ -97,8 +97,7 @@ def save(irc, source, args):
 def getPrefixModes(irc, remoteirc, channel, user):
     modes = ''
     for pmode in ('owner', 'admin', 'op', 'halfop', 'voice'):
-        if pmode not in remoteirc.cmodes:  # Mode not supported by IRCd
+        if pmode in remoteirc.cmodes:  # Mode supported by IRCd
-            continue
             mlist = irc.channels[channel].prefixmodes[pmode+'s']
             log.debug('(%s) getPrefixModes: checking if %r is in %r', irc.name, user, mlist)
             if user in mlist:
@@ -218,6 +217,7 @@ def initializeChannel(irc, channel):
         all_links = db[relay]['links'].copy()
         all_links.update((relay,))
         log.debug('(%s) initializeChannel: all_links: %s', irc.name, all_links)
+        # Iterate over all the remote channels linked in this relay.
         for link in all_links:
             modes = []
             remotenet, remotechan = link
@@ -229,20 +229,9 @@ def initializeChannel(irc, channel):
             rc = remoteirc.channels[remotechan]
             if not (remoteirc.connected and findRemoteChan(remoteirc, irc, remotechan)):
                 continue  # They aren't connected, don't bother!
-            for user in remoteirc.channels[remotechan].users:
+            # Join their (remote) users and set their modes.
-                # Don't spawn our pseudoclients again.
+            relayJoins(remoteirc, remotechan, rc.users,
-                if not utils.isInternalClient(remoteirc, user):
+                       rc.ts, rc.modes)
-                    log.debug('(%s) initializeChannel: should be joining %s/%s to %s', irc.name, user, remotenet, channel)
-                    localuser = getRemoteUser(remoteirc, irc, user)
-                    if localuser is None:
-                        log.warning('(%s) got None for local user for %s/%s', irc.name, user, remotenet)
-                        continue
-                    userpair = (getPrefixModes(remoteirc, irc, remotechan, user), localuser)
-                    log.debug('(%s) initializeChannel: adding %s to queued_users for %s', irc.name, userpair, channel)
-                    queued_users.append(userpair)
-            if queued_users:
-                irc.proto.sjoinServer(irc, irc.sid, channel, queued_users, ts=rc.ts)
-            relayModes(remoteirc, irc, remoteirc.sid, remotechan)
             relayModes(irc, remoteirc, irc.sid, channel)
             topic = remoteirc.channels[relay[1]].topic
             # Only update the topic if it's different from what we already have,
@@ -251,6 +240,7 @@ def initializeChannel(irc, channel):
                 irc.proto.topicServer(irc, irc.sid, channel, topic)
 
         log.debug('(%s) initializeChannel: joining our users: %s', irc.name, c.users)
+        # After that's done, we'll send our users to them.
         relayJoins(irc, channel, c.users, c.ts, c.modes)
         irc.proto.joinClient(irc, irc.pseudoclient.uid, channel)
 
@@ -262,7 +252,6 @@ def handle_join(irc, numeric, command, args):
     modes = args['modes']
     ts = args['ts']
     users = set(args['users'])
-    # users.update(irc.channels[channel].users)
     relayJoins(irc, channel, users, ts, modes)
 utils.add_hook(handle_join, 'JOIN')
 
@@ -597,8 +586,8 @@ def handle_kill(irc, numeric, command, args):
 utils.add_hook(handle_kill, 'KILL')
 
 def relayJoins(irc, channel, users, ts, modes):
-    queued_users = []
     for name, remoteirc in utils.networkobjects.items():
+        queued_users = []
         if name == irc.name:
             # Don't relay things to their source network...
             continue
@@ -607,13 +596,14 @@ def relayJoins(irc, channel, users, ts, modes):
             # If there is no link on our network for the user, don't
             # bother spawning it.
             continue
+        log.debug('(%s) relayJoins: got %r for users', irc.name, users)
         for user in users.copy():
             try:
                 if irc.users[user].remote:
                     # Is the .remote attribute set? If so, don't relay already
                     # relayed clients; that'll trigger an endless loop!
                     continue
-            except (AttributeError, KeyError):  # Nope, it isn't.
+            except AttributeError:  # Nope, it isn't.
                 pass
             if utils.isInternalClient(irc, user) or user not in irc.users:
                 # We don't need to clone PyLink pseudoclients... That's