Summary
Adds Redirect and RedirectPermanent methods to HttpResponseBase and HttpResponseWrapper classes.
Motivation and goals
These APIs are part of System.Web.HttpResponseBase and System.Web.HttpResponseWrapper in .NET 4.0
Looks like this possibly(?) could have been added after #102 or #233, when these methods were added to HttpResponse.
Examples
HttpResponseBase response = new HttpContextWrapper(HttpContext.Current).Response;
response.Redirect(newUrl);
response.Redirect(newUrl, true);
response.RedirectPermanent(newUrl);
response.RedirectPermanent(newUrl, true);