Bug 1088249 - Report OOMs from the js_alloc*CanGC functions, r=luke

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extra : rebase_source : 47f348d2d448ee51fb6e1f6929fd6b35e14b1e60
Bug 1088831 - Count storebuffer compactions, r=jonco

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extra : rebase_source : 01b960893a86d5a5b215ae6d9e642f4d5140b1b7
Bug 1088831 - Account for the storebuffer compaction time, r=jonco

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extra : rebase_source : d00a34bf03779e5725b18c92b6c749cc79bf0bd2
Bug 1088831 - Track mutator vs GC time in specified intervals, r=jonco

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extra : rebase_source : 88250aa66bf166253bd9ce234f0739497027e067