Bug 992359 - a. Make AutoIdArray::operator!() const; r=till
Bug 992359 - b. Add skeletal NativeJSObject.toBundle; r=blassey
Bug 992359 - c. Add GetBundle implementation; r=blassey
Bug 992359 - d. Properly handle nullptr context; r=blassey
Bug 992359 - e. Add Bundle test to testEventDispatcher; r=blassey

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extra : amend_source : 8c6d0343343ac055f0f20d82f1a6eda9bdc1e715