Disable XEP-0022 (Message Events) as it's been obsolete for a while
It can still be turned on by defining XEP0022 in the config.h file.
--- a/mcabber/mcabber/roster.h Sat Feb 06 18:16:06 2010 +0100
+++ b/mcabber/mcabber/roster.h Sat Feb 06 18:20:09 2010 +0100
@@ -98,7 +98,7 @@
#define ROSTER_FLAG_USRLOCK (1U<<3) // Node should not be removed from buddylist
// ROSTER_FLAG_LOCAL (1U<<4) // Buddy not on server's roster (??)
-#define XEP0022
+// #define XEP0022 (Officially obsoleted by XMPP Council)
#define XEP0085
struct jep0022 {