Bug 912863 - Update Talos version.  r=jhammel.

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extra : rebase_source : fc3fb273162380fd6c6a32afea08c36d197a8497
Bug 908514 (Part 1) - Replace imagelib endian macros with MFBT's endian functions. r=jrmuizel
Bug 908514 (Part 2) - Fix "variable may be used uninitialized" warning in nsICODecoder.cpp. r=jrmuizel