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/inlineClass/customEquals.kt

@@ -0,0 +1,16 @@
+/*
+ * Copyright 2010-2020 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.
+ */
+@file:Suppress("RESERVED_MEMBER_INSIDE_INLINE_CLASS")
+package codegen.inlineClass.customEquals
+
+import kotlin.test.*
+
+private inline class Z(val data: Int) {
+    override fun equals(other: Any?) = other is Z && data % 256 == other.data % 256
+}
+
+@Test fun runTest() {
+    assertTrue(Z(0) == Z(256))
+}

kotlin-native/backend.native/tests/codegen/inlineClass/defaultEquals.kt

@@ -0,0 +1,24 @@
+/*
+ * Copyright 2010-2020 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.inlineClass.defaultEquals
+
+import kotlin.test.*
+
+inline class A(val x: Int)
+inline class B(val a: A)
+inline class C(val s: String)
+inline class D(val c: C)
+
+@Test fun runTest() {
+    val a = A(42)
+    val b = B(a)
+    val c = C("zzz")
+    val d = D(c)
+    assertTrue(a.equals(a))
+    assertTrue(b.equals(b))
+    assertTrue(c.equals(c))
+    assertTrue(d.equals(d))
+}

kotlin-native/backend.native/tests/codegen/inlineClass/inlineClass0.kt

@@ -0,0 +1,20 @@
+/*
+ * 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.inlineClass.inlineClass0
+
+import kotlin.test.*
+
+// Based on KT-27225.
+
+inline class First(val value: Int)
+
+inline class Second(val value: First) {
+    constructor(c: Int) : this(First(c))
+}
+
+@Test fun runTest() {
+    assertEquals(Second(42).value.value, 42)
+}

kotlin-native/backend.native/tests/codegen/inlineClass/secondaryConstructorWithGenerics.kt

@@ -0,0 +1,18 @@
+/*
+ * Copyright 2010-2020 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.inlineClass.secondaryConstructorWithGenerics
+
+import kotlin.test.*
+
+// Based on KT-42649.
+inline class IC<T>(val value: List<T>) {
+    constructor(value: T) : this(listOf(value))
+}
+
+@Test
+fun runTest() {
+    assertEquals("abc", IC("abc").value.singleOrNull())
+}