Moves UPGRADE.txt notes from r357356 to a new section specific to 1.8.12

(issue ASTERISK-19352)
reported by: jamicque
........

Merged revisions 357386 from http://svn.asterisk.org/svn/asterisk/branches/1.8
........

Merged revisions 357400 from http://svn.asterisk.org/svn/asterisk/branches/10


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@357403 65c4cc65-6c06-0410-ace0-fbb531ad65f3

UPGRADE-1.8.txt

@@ -18,6 +18,11 @@
 ===
 ===========================================================
 
+from 1.8.11 to 1.8.12:
+
+* If no transport is specified in sip.conf, transport will default to UDP.
+  Also, if multiple transport= lines are used, only the last will be used.
+
 From 1.6.2 to 1.8:
 
 * chan_sip no longer sets HASH(SIP_CAUSE,<chan name>) on channels by default.
@@ -166,9 +171,6 @@ From 1.6.2 to 1.8:
   are using the early media DTMF overlap dialing method you now need to set
   allowoverlap=dtmf.
 
-* If no transport is specified in sip.conf, transport will default to UDP.
-  Also, if multiple transport= lines are used, only the last will be used.
-
 From 1.6.1 to 1.6.2:
 
 * SIP no longer sends the 183 progress message for early media by

UPGRADE-10.txt

@@ -19,6 +19,11 @@
 ===
 ===========================================================
 
+From 10.3 to 10.4:
+
+* If no transport is specified in sip.conf, transport will default to UDP.
+  Also, if multiple transport= lines are used, only the last will be used.
+
 From 1.8 to 10:
 
 cel_pgsql: