Backed out changeset 1768185637fd (bug 848449)
Backed out changeset d01a2a30d626 (bug 848449)
Backed out changeset f079105a0966 (bug 848449)
Backed out changeset 28ef4bdff455 (bug 848395)
Backed out changeset e112b04664a6 (bug 848395)
Backed out changeset f27dbd9ba370 (bug 848395) for crashes on Windows on a CLOSED TREE