Bug 938390 - don't create a string to hold chars in ScriptSource::chars (r=benjamin)

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extra : rebase_source : 44698608d7adc45fce0a40b9a400b0e0ef922a82
Bug 938615 - Simplify usage of ScriptSource::chars (r=benjamin)

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extra : rebase_source : ae8644e441bd99e08c1743c5dc47517bae479f78
Bug 933932 - OdinMonkey: provide a better warning message for uncoerced calls (r=bbouvier)

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extra : rebase_source : 48b02eb62e0b829b57ca6caef1d922643afab791
Bug 933807 - Allow easily disabling TriggerOperationCallbackFor(Ion|AsmJS)Code (r=bhackett)

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extra : rebase_source : bcf49d894252af53a24aa08a0db25c99dedd26d9