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kotlinlang

taking the spread operator example mentioned above from stackoverflow:
```fun sumNumbers(vararg numbers: Int): Int {
    return numbers[1]
}

val numbers = intArrayOf(2, 3, 4)
val sum = sumNumbers(*numbers)```
i decompiled the kotlin byte code and found, that the spread operator generates a copy of the numbers array:
```sum = sumNumbers(Arrays.copyOf(numbers, numbers.length));```
Is that on purpose? Does it make sense?

That's an interesting implementation of `sumNumbers`. I can see in my mind you unit tests for that:
```
sumNumbers(0, 1) == 1
sumNumbers(0, 6, 0, 0, 0, 0) == 6
sumNumbers(-2, 3, 2) == 3
```

sorry, i did not mention, that i replaced the original line ```return numbers.sum()``` from the example with ```return numers[1]``` because i did not want to implement numbers.sum() just for seeing the java code of the call site.
Best would be the unit test for ```sumNumbers(0)```
:innocent: