Bug 854137 - Don't hold pointers to yield nodes in the parse tree (second attempt).  r=jorendorff.

--HG--
extra : rebase_source : 1fc784f2b123f1606b8f612adff6725555dbbb34
Bug 839683 - Append telemetry opt-out notice for ANR reporting; r=mfinkle
Bug 839683 - Enable Android ANR reporter on appropriate channels; r=blassey
Merge the last pgo-green cset from mozilla-inbound to mozilla-central
Bug 851224 - backout broken change, r=mfinkle
Merge m-c to m-i