Correct scope of operator calls

- Enhance reflection module to indicate inheritance
  - Add ability to catch errors thrown from a eval
    inside of a script

unittests/operator_scoping.chai

@@ -1,14 +1,8 @@
-def `+`(x, y)
-{
-  print(i);
+load_module("reflection")
+
+try {
+  eval("def `+`(x, y) \n { \n print(i); \n } \n \n var i = 10; \n \"1\" + 1;\n")
+  assert_false(true); // we should never get here
+} catch (e) {
+  assert_equal("Error: \"Can not find object: i\" ", e.what()); 
 }
-
-auto i = 10;
-
-
-// It should fail because `+` should not be able to see the i
-
-"1" + 1;
-assert_false(true);
-
-

unittests/unit_test.inc

@@ -5,7 +5,7 @@ def assert_equal(x, y)
     // Passes
   } else {
     // Fails
-    print("assert_equal failure: got " + to_string(y) + " expected " + to_string(x));
+    print("assert_equal failure: got '" + to_string(y) + "' expected '" + to_string(x) + "'");
     exit(-1);
   }
 }