Bug 1088831 - Count storebuffer compactions, r=jonco

--HG--
extra : rebase_source : e9bb802708fe5813377ce09f487a6304a8c265d7
Bug 1088831 - Account for the storebuffer compaction time, r=jonco

--HG--
extra : rebase_source : c6dc383197f0abd01eb9bdaf49fb2ac9d370a1b4
Bug 1088831 - Track mutator vs GC time in specified intervals, r=jonco

--HG--
extra : rebase_source : 44313ac31315dbebde12bd76ade8f0cfb4d7ce5a