Teach unpack_seqs how to handle BC 0.4 and LC 1.2 style update sequences
Teach unpack_seqs how to handle BC 0.4 and LC 1.2 style update sequences

BugzID: 13351

fkaempfer/couchdb,fkaempfer/couchdb,fkaempfer/couchdb,fkaempfer/couchdb,fkaempfer/couchdb,fkaempfer/couchdb