Revert removal of compare nesting

Since we want the user to be able to pass a negative comparison function, the extra layer of wrapping is now needed

src/core/matchers/toEqual.js

@@ -3,10 +3,16 @@ getJasmineRequireObj().toEqual = function() {
   function toEqual(util, customEqualityTesters) {
     customEqualityTesters = customEqualityTesters || [];
 
-    return function(actual, expected) {
-      return {
-        pass: util.equals(actual, expected, customEqualityTesters)
-      };
+    return {
+      compare: function(actual, expected) {
+        var result = {
+          pass: false
+        };
+
+        result.pass = util.equals(actual, expected, customEqualityTesters);
+
+        return result;
+      }
     };
   }