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/tools/scripts/update_zephyr.sh

@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+
+KONAN_TOOLCHAIN_VERSION=1
+TARBALL_zephyr_arm=target-sysroot-$KONAN_TOOLCHAIN_VERSION-zephyr-arm
+OUT=`pwd`
+
+if [ -z "ZEPHYR_SDK_INSTALL_DIR" ]; then
+    echo "Using default Zephyr SDK install location"
+    export ZEPHYR_SDK_INSTALL_DIR="/opt/zephyr-sdk"
+fi
+
+sdk=armv5-zephyr-eabi
+p=$ZEPHYR_SDK_INSTALL_DIR/sysroots/$sdk/usr
+echo "Packing SDK $sdk as $OUT/$TARBALL_zephyr_arm.tar.gz..."
+tar -czvf $OUT/$TARBALL_zephyr_arm.tar.gz -C $p .