Update notes for submitted changes

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

2a/f88e7ca2c94ab5b5c4ea30e422bbcfc4919f5e

@@ -0,0 +1,7 @@
+Code-Review+2: Friendly Automation
+Verified+2: Friendly Automation
+Submitted-by: Friendly Automation
+Submitted-at: Mon, 06 Apr 2020 09:17:05 -0500
+Reviewed-on: https://gerrit.asterisk.org/c/asterisk/+/14118
+Project: asterisk
+Branch: refs/heads/certified/16.8