Backed out 33 changesets (bug 896126, bug 887334, bug 889911, bug 889714, bug 895774) for xpcshell failures on a CLOSED TREE.

Backed out changeset 5f9484e134f9 (bug 896126)
Backed out changeset 8318754cde46 (bug 887334)
Backed out changeset 3c2b8b15cdaa (bug 887334)
Backed out changeset fc50bc25f83c (bug 887334)
Backed out changeset ddf47eba68c0 (bug 887334)
Backed out changeset b78327115bea (bug 887334)
Backed out changeset 5db330103fbe (bug 887334)
Backed out changeset 6844870765b1 (bug 887334)
Backed out changeset ff3db04a7caa (bug 887334)
Backed out changeset af1c512d2978 (bug 887334)
Backed out changeset 35b6d437eb11 (bug 887334)
Backed out changeset 28ea664f1333 (bug 887334)
Backed out changeset be520c3f0c89 (bug 887334)
Backed out changeset 508522bee367 (bug 887334)
Backed out changeset 0d59888536b5 (bug 887334)
Backed out changeset 101e407d040a (bug 887334)
Backed out changeset cd2f2d2299ee (bug 887334)
Backed out changeset f7fb970c8906 (bug 887334)
Backed out changeset fd8bd2219d49 (bug 887334)
Backed out changeset 40c3e35e1986 (bug 889714)
Backed out changeset b2bb42cc8f02 (bug 889714)
Backed out changeset e22cc8bdcbcf (bug 889714)
Backed out changeset 588385ea4fee (bug 889714)
Backed out changeset 9150b4f39c10 (bug 889714)
Backed out changeset 43e8b15601b8 (bug 889714)
Backed out changeset 3242b9e0f6b0 (bug 889714)
Backed out changeset 7b45f302e40e (bug 889714)
Backed out changeset 53e221a057cc (bug 889714)
Backed out changeset 193e8efe1350 (bug 889911)
Backed out changeset b78af29d5ac5 (bug 889911)
Backed out changeset b156c252aac0 (bug 889911)
Backed out changeset a6b7104a9a82 (bug 889911)
Backed out changeset d1e156bb3805 (bug 895774)