Backed out 6 changesets (bug 1054630) for hazards bustage ON A CLOSED TREE

Backed out changeset 684b95601155 (bug 1054630)
Backed out changeset e656c61ecd70 (bug 1054630)
Backed out changeset fa6d52a0cfea (bug 1054630)
Backed out changeset 19d115a44912 (bug 1054630)
Backed out changeset 0bceb044a4de (bug 1054630)
Backed out changeset be39ba3aa672 (bug 1054630)