Backed out 3 changesets (bug 877527, bug 878765) for mochitest-1 timeouts on a CLOSED TREE.

Backed out changeset 0bf1e71fe3cc (bug 877527)
Backed out changeset 8473deb5fba9 (bug 878765)
Backed out changeset 0d327854300c (bug 877527)
Backed out 7 changesets (bug 872147, bug 872143, bug 877467, bug 877200, bug 870063, bug 872149) for robocop-2 failures on a CLOSED TREE.

Backed out changeset 3a1e8e7ac07e (bug 870063)
Backed out changeset 8904d2bf5da0 (bug 877200)
Backed out changeset 80455a25276b (bug 872149)
Backed out changeset c3b5567f1271 (bug 872147)
Backed out changeset d3106edd4a5a (bug 872143)
Backed out changeset 4fd2ae88da98 (bug 870063)
Backed out changeset 1797dc46e862 (bug 877467)
Bug 865654: Adjust offsets within text areas only so that other text controls get correct offsets. [r=blassey]
Bug 877130 - Fix bogus assert, r=djvj.
Bug 872981 - Print a warning whenever something attempts to store more than 4kb of preferences. r=bsmedberg
Bug 878859 - Remove the mach clippy avatar; r=ted

DONTBUILD since this is not part of the build!
Backed out 3 changesets (bug 877862, bug 878325) for mochitest-other orange on a CLOSED TREE.

Backed out changeset 803586f0a297 (bug 878325)
Backed out changeset d4a39e18e5a7 (bug 878325)
Backed out changeset 08a29f18500a (bug 877862)
Bug 779497 - Clear addons list inside of async callback. r=wesj
Merge inbound to m-c.
Merge m-c to inbound.