Handle reversed() in ForLoopsLowering.

We get the info for the underlying progression and invert it. For
progressions whose last bound was open (e.g., `until` loop), the
reversed version will have an open first bound and so the induction
variable must be incremented first.

Also unified the way of extracting HeaderInfo out of changed calls
(e.g., `indices.reversed()`), and fixed declaration parents in
ForLoopsLowering.

compiler/testData/codegen/box/arrays/forInReversed/reversedArrayOriginalUpdatedInLoopBody.kt

@@ -0,0 +1,18 @@
+// KJS_WITH_FULL_RUNTIME
+// WITH_RUNTIME
+import kotlin.test.*
+
+fun box(): String {
+    val arr = intArrayOf(1, 2, 3, 4)
+    var sum = 0
+    var index = 0
+    for (i in arr.reversedArray()) {
+        // reversedArray() returns a new Array with elements in reversed order.
+        // Modifying the original array should have no effect on the iteration subject.
+        arr[index++] = 0
+        sum = sum * 10 + i
+    }
+    assertEquals(4321, sum)
+
+    return "OK"
+}