Alloc arrays, fix RTTI for Any (#49)

backend.native/tests/runtime/basic/array0.kt

@@ -0,0 +1,29 @@
+fun main(args : Array<String>) {
+    // Create instances of all array types.
+    val byteArray = ByteArray(5)
+    println(byteArray.size.toString())
+
+    val charArray = CharArray(6)
+    println(charArray.size.toString())
+
+    val shortArray = ShortArray(7)
+    println(shortArray.size.toString())
+
+    val intArray = IntArray(8)
+    println(intArray.size.toString())
+
+    val longArray = LongArray(9)
+    println(longArray.size.toString())
+
+    val floatArray = FloatArray(10)
+    println(floatArray.size.toString())
+
+    val doubleArray = FloatArray(11)
+    println(doubleArray.size.toString())
+
+    val booleanArray = BooleanArray(12)
+    println(booleanArray.size.toString())
+
+    val stringArray = Array<String>(13)
+    println(stringArray.size.toString())
+}