update redback to 1.2.3 merge -r 898562 of 1.3.x branch
update redback to 1.2.3
merge -r 898562 of 1.3.x branch


git-svn-id: 14f2065c7afdeb19086ae32a80b5e7aec819bae3@898563 13f79535-47bb-0310-9956-ffa450edef68

apache/continuum,apache/continuum,apache/continuum