Bug 864600 - OdinMonkey: change doublish to double in overload set of ~~ and - (r=sstangl)

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extra : rebase_source : 4e49e0f060e752049bee8fb8b24fc2bdc91d6c5a
Bug 864600 - OdinMonkey: change asm.js validation to require explicit coercion of all call expressions (r=sstangl)

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extra : rebase_source : f1235b48a1cfd96d52e96a9727d6d0b7852281b6