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/Localizable.stringsdict

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- AUTO-GENERATED FILE. DO NOT MODIFY. -->
+<!-- This file was automatically generated by the LocoLaser tool. -->
+<!-- It should not be modified by hand. -->
+
+<plist version="1.0">
+    <dict>
+        <key>screen_main_plural_string</key>
+        <dict>
+            <key>NSStringLocalizedFormatKey</key>
+            <string>%#@value@</string>
+            <key>value</key>
+            <dict>
+                <key>NSStringFormatSpecTypeKey</key>
+                <string>NSStringPluralRuleType</string>
+                <key>NSStringFormatValueTypeKey</key>
+                <string>d</string>
+                <key>other</key>
+                <string>Plural: %d apples</string>
+                <key>one</key>
+                <string>Plural: one apple</string>
+                <key>zero</key>
+                <string>Plural: no apples</string>
+            </dict>
+        </dict>
+    </dict>
+</plist>