Backed out 4 changesets (bug 947337) for APZC test failures

Backed out changeset 31da64bcc970 (bug 947337)
Backed out changeset 00a111a49239 (bug 947337)
Backed out changeset d7cd7c0cedd3 (bug 947337)
Backed out changeset f6b914730a9c (bug 947337)