Add mail_msg action to view the last mail message

bin/omni

@@ -283,7 +283,7 @@ build_illumos()
 	tailpid=$!
 	wait $nightlypid
 	kill $tailpid
-	#cat $illumos_clone/log/mail_msg
+	sleep 5
 }
 
 build_omnios()
@@ -307,6 +307,17 @@ onu_illumos()
 	    -d $illumos_clone/packages/i386/nightly-nd
 }
 
+view_mail_msg()
+{
+	[ ! -d $illumos_clone/log ] && abort "No log directory present."
+	(
+		cd $illumos_clone/log
+		dir="`ls -1tr | fgrep 'log.' | tail -1`"
+		[ -f "$dir/mail_msg" ] || abort "Mail message not present."
+		LESS=-X less $dir/mail_msg
+	)
+}
+
 cleanup()
 {
 	echo "Clearing temporary build directory..."
@@ -505,6 +516,7 @@ Operations:
 
     update_illumos   - update your local omnios illumos environment     (ui)
     build_illumos    - build omnios-illumos                             (bi)
+    mail_msg         - view mail_msg file from last build               (mm)
 
     update_omnios    - update your local omnios build environment       (uo)
     build_omnios     - build OmniOS                                     (bo)
@@ -550,6 +562,7 @@ for op in "$@"; do
 	bi|build_illumos)		build_illumos ;;
 	uo|update_omnios)		update_omnios ;;
 	bo|build_omnios)		build_omnios ;;
+	mail_msg|mm)			view_mail_msg ;;
 	onu)				onu_illumos ;;
 	cleanup)			cleanup ;;
 	ud|upstream_diff)		is dev && upstream_diff || help ;;