Bug 903476 - Update libspeex to opus-tools version, as it is the current upstream. r=ehsan

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extra : rebase_source : 4dd23aa8f0e7f0919e1b8f37d9efce11e6b8d8cc
Bug 903476 - Update the fuzzing values in test_mediaDecoding.html because we changed the resampler. r=ehsan

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extra : rebase_source : 3b354018ba83f53cf64d6adb511c41dfcb205039