tests: Copy stdlib tests from Kotlin/JVM

This patch copies Kotlin/JVM stdlib tests (libraries/stdlib/test)
excepting ones with explicit java dependencies. It also transforms
the tests to use them as box-tests.

backend.native/tests/external/stdlib/collections/MapTest/all.kt

@@ -0,0 +1,11 @@
+import kotlin.test.*
+
+
+fun box() {
+    val map = mapOf(Pair("b", 3), Pair("c", 2), Pair("a", 2))
+    assertTrue(map.all { it.key != "d" })
+    assertTrue(emptyMap<String, Int>().all { it.key == "d" })
+
+    assertTrue(map.all { it.value > 0 })
+    assertFalse(map.all { it.value == 2 })
+}