Support mapping of KType to j.l.reflect.Type

compiler/testData/codegen/boxWithJava/reflection/callStaticJavaMethod/J.java

@@ -0,0 +1,5 @@
+public class J {
+    public static String foo(int x, int[] arr, Object[] arr2) {
+        return "" + x + arr[0] + arr2[0];
+    }
+}