KJS: move println to kotlin.io; import kotlin.io by default in Default platform

compiler/frontend.java/src/org/jetbrains/kotlin/resolve/jvm/platform/JvmPlatform.kt

@@ -29,7 +29,6 @@ object JvmPlatform : TargetPlatform("JVM") {
 
         add(ImportPath("java.lang.*"))
         add(ImportPath("kotlin.jvm.*"))
-        add(ImportPath("kotlin.io.*"))
 
         fun addAllClassifiersFromScope(scope: MemberScope) {
             for (descriptor in scope.getContributedDescriptors(DescriptorKindFilter.CLASSIFIERS, MemberScope.ALL_NAME_FILTER)) {

compiler/frontend/src/org/jetbrains/kotlin/resolve/TargetPlatform.kt

@@ -45,6 +45,7 @@ abstract class TargetPlatform(val platformName: String) {
             add(ImportPath("kotlin.ranges.*"))
             add(ImportPath("kotlin.sequences.*"))
             add(ImportPath("kotlin.text.*"))
+            add(ImportPath("kotlin.io.*"))
         }
 
         override val platformConfigurator =