WebAuth 3.5.0

This is the product of the past couple of weeks of work. Originally, the SPNEGO support was an all or nothing thing; now, all the user interface changes and page flow work has been done to also allow it to work in a voluntary mode, where the user can decide whether or not to try SPNEGO. While I was at it, I also drastically improved the documentation of weblogin and its configuration options.

Not a lot of changes to the other parts of the system, but I did make WebAuthExtraRedirect the default since we run that way everywhere around here and it works fine. I also allowed the module to accept it as a server config option as well as in a directory block.

You can get the latest release from the WebAuth pages.