Backed out 5 changesets (bug 1083866) for spidermonkey bustage on a CLOSED TREE

Backed out changeset 00997b2b5a16 (bug 1083866)
Backed out changeset 4d8f51a4014b (bug 1083866)
Backed out changeset c37a1e604654 (bug 1083866)
Backed out changeset 07f268cc5a64 (bug 1083866)
Backed out changeset 7bfdfe2629ce (bug 1083866)