Revert fbf2424838:

postpone "transparent semantics for spread operator"
until Java-related design issues are resolved (java.utils.Arrays#asList).

compiler/testData/codegen/boxWithStdlib/vararg/spreadCopiesArray.kt

@@ -1,27 +0,0 @@
-import kotlin.test.*
-
-fun <T> copyArray(vararg data: T): Array<out T> = data
-
-inline fun <reified T> reifiedCopyArray(vararg data: T): Array<out T> = data
-
-fun copyIntArray(vararg data: Int): IntArray = data
-
-fun box(): String {
-    val sarr = arrayOf("OK")
-    val sarr2 = copyArray(*sarr)
-    sarr[0] = "Array was not copied"
-    assertEquals(sarr2[0], "OK", "Failed: Array<String>")
-
-    var rsarr = arrayOf("OK")
-    var rsarr2 = reifiedCopyArray(*rsarr)
-    rsarr[0] = "Array was not copied"
-    assertEquals(rsarr2[0], "OK", "Failed: Array<String>, reified copy")
-
-    val iarr = IntArray(1)
-    iarr[0] = 1
-    val iarr2 = copyIntArray(*iarr)
-    iarr[0] = 42
-    assertEquals(iarr2[0], 1, "Failed: IntArray")
-
-    return "OK"
-}