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/runtime/exceptions/stack_trace_inline.kt

@@ -0,0 +1,31 @@
+import kotlin.text.Regex
+import kotlin.test.*
+
+fun exception() {
+    error("FAIL!")
+}
+
+fun main() {
+    try {
+        exception()
+    }
+    catch (e:Exception) {
+        val stackTrace = e.getStackTrace()
+        stackTrace.take(6).forEach(::checkFrame)
+    }
+}
+internal val regex = Regex("^(\\d+)\\ +.*/(.*):(\\d+):.*$")
+internal val goldValues = arrayOf<Pair<String, Int>?>(
+        null,
+        null,
+        null,
+        null,
+        "stack_trace_inline.kt" to 5,
+        "stack_trace_inline.kt" to 10)
+internal fun checkFrame(value:String) {
+    val (pos, file, line) = regex.find(value)!!.destructured
+    goldValues[pos.toInt()]?.let{
+        assertEquals(it.first, file)
+        assertEquals(it.second, line.toInt())
+    }
+}