Bug 886910 - GC: IsAboutToBeFinalized returns true for things allocated during incremental sweeping r=billm

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extra : rebase_source : 04f6e07060567631c0e10ba913595a2a53e1c20f
Bug 886829 - In-source comments incorrectly say JSClass::finalizer is mandatory r=billm

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extra : rebase_source : d01ba99257b2a392d332f56dfc655f6439462c1b
Bug 878160 - GC: post barrier weak references in the browser - part 1 JS engine r=terrence

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extra : rebase_source : 4dfd4f8f46564d3a9858646a0f68c9047c2f7e93
Bug 878160 - GC: post barrier weak references in the browser - part 2 browser r=terrence r=billm

--HG--
extra : rebase_source : a1856a7dce28da5086f6fbeaeda15596193aa7ad