Update UPGRADE.txt with notes about ICE support and res_xmpp.

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@370354 65c4cc65-6c06-0410-ace0-fbb531ad65f3

UPGRADE.txt

@@ -117,6 +117,10 @@ SIP
    ss7-oli) is now parsed out of the From header and copied into the channel's
    ANI2 information field.  This is readable from the CALLERID(ani2) dialplan
    function.
+ - ICE support has been added and is enabled by default. Some endpoints may have
+   problems with the ICE candidates within the SDP. If this is the case ICE support
+   can be disabled globally or on a per-endpoint basis using the icesupport
+   configuration option. Symptoms of this include one way media or no media flow.
 
 chan_unistim
  - Due to massive update in chan_unistim phone keys functions and on-screen 
@@ -128,6 +132,12 @@ users.conf:
    documented in v1.4.  Set the asterisk.conf stdexten=macro parameter to
    invoke the stdexten the old way.
 
+res_jabber
+ - This module has been deprecated in favor of the res_xmpp module. The res_xmpp
+   module is backwards compatible with the res_jabber configuration file, dialplan
+   functions, and AMI actions. The old CLI commands can also be made available using
+   the res_clialiases template for Asterisk 11.
+
 From 1.8 to 10:
 
 cel_pgsql: