Update notes for submitted changes

* Update main/backtrace.c to deal with changes in binutils 2.34.

2a/d64e97c05f613fc2dc11032bed41328d84d05e

@@ -0,0 +1,8 @@
+Code-Review+1: Joshua Colp <jcolp@sangoma.com>
+Code-Review+2: George Joseph <gjoseph@digium.com>
+Verified+2: George Joseph <gjoseph@digium.com>
+Submitted-by: George Joseph <gjoseph@digium.com>
+Submitted-at: Tue, 17 Mar 2020 09:14:29 -0500
+Reviewed-on: https://gerrit.asterisk.org/c/asterisk/+/13944
+Project: asterisk
+Branch: refs/heads/master