Move everything under kotlin-native folder

I was forced to manually do update the following files, because otherwise
they would be ignored according .gitignore settings. Probably they
should be deleted from repo.

Interop/.idea/compiler.xml
Interop/.idea/gradle.xml
Interop/.idea/libraries/Gradle__org_jetbrains_kotlin_kotlin_runtime_1_0_3.xml
Interop/.idea/libraries/Gradle__org_jetbrains_kotlin_kotlin_stdlib_1_0_3.xml
Interop/.idea/modules.xml
Interop/.idea/modules/Indexer/Indexer.iml
Interop/.idea/modules/Runtime/Runtime.iml
Interop/.idea/modules/StubGenerator/StubGenerator.iml
backend.native/backend.native.iml
backend.native/bc.frontend/bc.frontend.iml
backend.native/cli.bc/cli.bc.iml
backend.native/cli.bc/src/org/jetbrains/kotlin/cli/bc/K2Native.kt
backend.native/cli.bc/src/org/jetbrains/kotlin/cli/bc/K2NativeCompilerArguments.kt
backend.native/tests/link/lib/foo.kt
backend.native/tests/link/lib/foo2.kt
backend.native/tests/teamcity-test.property

kotlin-native/backend.native/tests/codegen/object/initialization.kt

@@ -0,0 +1,33 @@
+/*
+ * Copyright 2010-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the LICENSE file.
+ */
+
+package codegen.`object`.initialization
+
+import kotlin.test.*
+
+open class A(val a:Int, val b:Int)
+
+open class B(val c:Int, d:Int):A(c, d)
+
+open class C(i:Int, j:Int):B(i + j, 42)
+
+class D (i: Int, j:Int) : C(i, j){
+   constructor(i: Int, j:Int, k:Int) : this(i, j) {
+      foo(i)
+   }
+   constructor():this(1, 2)
+}
+
+fun foo(i:Int) : Unit {}
+
+
+fun foo(i:Int, j:Int):Int {
+   val c = D(i, j)
+   return c.c
+}
+
+@Test fun runTest() {
+   if (foo(2, 3) != 5) throw Error()
+}