Bug 869733 - Tenure all clones caused by Lambda creation; r=shu

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extra : rebase_source : 7e22802f9e1bc6eec5f9a5ebe2d5bfb004f88a30
Bug 869733 - Assert we don't try to nursery allocate inside GC code; r=billm

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extra : rebase_source : 5cd269e8b904fba8cf80cd99c2ce9bea158e09b2
Bug 872381 - Don't bake the shape tree depth into tests; r=jandem

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extra : rebase_source : 5935f593dcbd0f297eb82f4d2489abf975749ff5