Make Array<T>(size, init) a constructor of Array

It's not marked as inline, this is why 'crossinline' was added in
jaggedArray.kt/jaggedDeep.kt. Will be fixed in the following commits

core/builtins/native/kotlin/Array.kt

@@ -22,8 +22,10 @@ package kotlin
  * standard library functions.
  * See [Kotlin language documentation](http://kotlinlang.org/docs/reference/basic-types.html#arrays)
  * for more information on arrays.
+ * @constructor Creates a new array with the specified [size], where each element is calculated by calling the specified
+ * [init] function. The [init] function returns an array element given its index.
  */
-public class Array<T> private (): Cloneable {
+public class Array<T>(size: Int, init: (Int) -> T): Cloneable {
     /**
      * Returns the array element at the specified [index]. This method can be called using the
      * index operator: