Bug 958940 - Fix SpiderMonkey build failure on Linux/PA-RISC. r=nbp

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extra : rebase_source : 48566a3a03160356873cdb8912e27581ac2f677d
Bug 991451 - Suppress clang and gcc warnings in third-party code: Skia. r=gw280

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extra : rebase_source : 0de672713a7eb5fada98d43d145e9beb8e3af61f