agsXMPP no longer does keep-alive spaces/newlines? See

	commit 050bdd7adfebae3edf0f08e7299534943b607396
	Author: Mirco Bauer <meebey@meebey.net>
	Date:   Sun Mar 27 20:23:20 2011 +0200

	    [Engine-XMPP] Suppress extra newline for keep-alive messages

	diff --git a/src/Engine-XMPP/Protocols/Xmpp/XmppProtocolManager.cs b/src/Engine-XMPP/Protocols/Xmpp/XmppProtocolManager.cs
	index 7f527e6..2a3b0f2 100644
	--- a/src/Engine-XMPP/Protocols/Xmpp/XmppProtocolManager.cs
	+++ b/src/Engine-XMPP/Protocols/Xmpp/XmppProtocolManager.cs
	@@ -493,6 +493,11 @@ namespace Smuxi.Engine
		     }
	 
		     try {
	+                if (text != null && text.Trim().Length == 0) {
	+                    DebugWrite(text);
	+                    return;
	+                }
	+
		         var strWriter = new StringWriter();
		         var xmlWriter = new XmlTextWriter(strWriter);
		         xmlWriter.Formatting = Formatting.Indented;