Backed out 4 changesets (bug 1025548) for suspicion of causing Mozmill failures.

Backed out changeset 01b838f9a078 (bug 1025548)
Backed out changeset face6ed1726e (bug 1025548)
Backed out changeset 647a2915cf66 (bug 1025548)
Backed out changeset 60013aa5437b (bug 1025548)