Bug 1104410 - Add a test.

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extra : rebase_source : 5350acb0503b650ba322cebe14d39e1df5778e51
Bug 1105901 - Update cubeb from upstream to pick up compilation fix for glibc 2.20.  r=padenot

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extra : rebase_source : cb04020b3c502f51e2411b1984bb42d8423d524b