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/interop/objc_with_initializer/objc_misc.def

@@ -0,0 +1,5 @@
+language = Objective-C
+headers = Foundation/NSArray.h Foundation/NSValue.h Foundation/NSString.h
+headerFilter = **/objc_misc.h Foundation/NSArray.h Foundation/NSValue.h Foundation/NSString.h
+linkerOpts = -lobjcmisc
+

kotlin-native/backend.native/tests/interop/objc_with_initializer/objc_misc.h

@@ -0,0 +1,11 @@
+#include <Foundation/NSObject.h>
+@interface A:NSObject
+
+@end
+
+@interface B:A
++(A*)giveC;
+@end
+
+@interface C:A
+@end

kotlin-native/backend.native/tests/interop/objc_with_initializer/objc_misc.m

@@ -0,0 +1,20 @@
+#import <Foundation/Foundation.h>
+#include "objc_misc.h"
+@implementation A
+
+@end
+
+@implementation B:A
++(A*)giveC{
+  return [[C alloc] init];
+}
+@end
+
+@implementation C:A
+@end
+
+#if 0
+int main() {
+  [B giveC];
+}
+#endif

kotlin-native/backend.native/tests/interop/objc_with_initializer/objc_test.kt

@@ -0,0 +1,7 @@
+import objc_misc.*
+
+val a = B.giveC()!! as C
+
+fun main() {
+  println("OK")
+}