logged uri missing PathBase

[crystalgreen]

Expected Behavior

When hosted in IIS in a virtual directory or subfolder, the HttpRequest.PathBase is set to that base path.
This is missing in the current version, resulting in a wrong logged uri.

Example:

HTTP request on: https://myhost.com/myapp/mycontroller

The log should contain that url.

Actual Behavior

Logged url: https://myhost.com/mycontroller

missing myapp part.