Backed out 6 changesets (bug 900133, bug 881634, bug 893302) for build bustage

Backed out changeset 49632bc14e27 (bug 900133)
Backed out changeset 036780fccc89 (bug 900133)
Backed out changeset b8db58f5e209 (bug 893302)
Backed out changeset 67c3e4204e44 (bug 893302)
Backed out changeset a857a4246dd9 (bug 900133)
Backed out changeset e0e2e27af6c1 (bug 881634)