Refactored tests using Array constructor:

Some moved to tests with stdlib
Some changed to use arrayOfNulls

compiler/testData/codegen/box/arrays/arrayGetAssignMultiIndex.kt

@@ -1,11 +0,0 @@
-fun Array<String>.get(index1: Int, index2: Int) = this[index1 + index2]
-fun Array<String>.set(index1: Int, index2: Int, elem: String) {
-    this[index1 + index2] = elem
-}
-
-fun box(): String {
-    val s = Array<String>(1, { "" })
-    s[1, -1] = "O"
-    s[2, -2] += "K"
-    return s[-3, 3]
-}

compiler/testData/codegen/box/arrays/arrayGetMultiIndex.kt

@@ -1,11 +0,0 @@
-fun Array<String>.get(index1: Int, index2: Int) = this[index1 + index2]
-fun Array<String>.set(index1: Int, index2: Int, elem: String) {
-    this[index1 + index2] = elem
-}
-
-fun box(): String {
-    val s = Array<String>(1, { "" })
-    s[1, -1] = "OK"
-    return s[-2, 2]
-}
- 

compiler/testData/codegen/box/arrays/iterator.kt

@@ -1,9 +0,0 @@
-fun box(): String {
-    val x = Array<Int>(5, { it } ).iterator()
-    var i = 0
-    while (x.hasNext()) {
-        if (x.next() != i) return "Fail $i"
-        i++
-    }
-    return "OK"
-}

compiler/testData/codegen/box/arrays/kt238.kt

@@ -5,7 +5,7 @@ fun t1 () {
 }
 
 fun t2 () {
-    val a2 = Array<Int>(1,{0})
+    val a2 = arrayOfNulls<Int>(1) as Array<Int>
     a2[0] = 0 //ok
     var i = a2[0] //ok
 }

compiler/testData/codegen/box/arrays/kt2997.kt

@@ -67,10 +67,10 @@ fun box(): String {
     if (foo(boolA) != 1) return "fail boolean[]"
     val cA = CharArray(1)
     if (foo(cA) != 1) return "fail char[]"
-    val oA = Array<Any>(1) { 1 }
+    val oA = arrayOfNulls<Int>(1)
     if (foo(oA) != 1) return "fail Any[]"
 
-    val sArray = Array<String>(0) { "" }
+    val sArray = arrayOfNulls<String>(0)
     if (foo(sArray) != 0) return "fail String[]"
 
     return "OK"

compiler/testData/codegen/box/arrays/kt779.kt

@@ -1,3 +1,3 @@
 val <T> Array<T>.length : Int get() = this.size()
 
-fun box() = if(Array(10, {1}).length == 10) "OK" else "fail"
+fun box() = if(arrayOfNulls<Int>(10).length == 10) "OK" else "fail"

compiler/testData/codegen/box/arrays/nonNullArray.kt

@@ -1,8 +0,0 @@
-class A() {
-    class B(val i: Int) {
-    }
-
-    fun test() = Array<B> (10, { B(it) })
-}
-
-fun box() = if(A().test()[5].i == 5) "OK" else "fail"